Changes

*'''Connecticut'''

*'''Connecticut'''

30-year Senate veteran [[Chris Dodd]] was ranked the most vulnerable Senator in the 2010 election cycle by National Journal. He has announced he will not seek a sixth term. State Attorney General [[Richard Blumenthal]] is seeking the Democratic nomination.  

30-year Senate veteran [[Chris Dodd]] was ranked the most vulnerable Senator in the 2010 election cycle by National Journal. He has announced he will not seek a sixth term. State Attorney General [[Richard Blumenthal]] is seeking the Democratic nomination, increasing Democrats' chances of holding the seat.

Dodd’s approval ratings had plummeted after his failed presidential campaign in 2008, his controversial mortgage deal from Countrywide, and revelations about the $165 million bonuses for AIG executives that he attached in an amendment to the economic stimulus package, despite receiving federal bailout money. Former Congressman [[Rob Simmons]] is seeking the Republican nomination and was leading Dodd in public opinion polls. <ref>http://www.quinnipiac.edu/x1296.xml?ReleaseID=1353</ref> <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/connecticut/toplines/toplines_connecticut_senate_race_september_10_2009/</ref> <ref>http://www.dailykos.com/statepoll/2009/9/10/CT/369/</ref> <ref>http://www.quinnipiac.edu/x1296.xml?ReleaseID=1395</ref> <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/connecticut/election_2010_connecticut_senate_race</ref>Financial services executive [[Peter Schiff]] is also running.  

Dodd’s approval ratings had plummeted after his failed presidential campaign in 2008, his controversial mortgage deal from Countrywide, and revelations about the $165 million bonuses for AIG executives that he attached in an amendment to the economic stimulus package, despite receiving federal bailout money. Former Congressman [[Rob Simmons]] is seeking the Republican nomination and was leading Dodd in public opinion polls. <ref>http://www.quinnipiac.edu/x1296.xml?ReleaseID=1353</ref> <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/connecticut/toplines/toplines_connecticut_senate_race_september_10_2009/</ref> <ref>http://www.dailykos.com/statepoll/2009/9/10/CT/369/</ref> <ref>http://www.quinnipiac.edu/x1296.xml?ReleaseID=1395</ref> <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/connecticut/election_2010_connecticut_senate_race</ref>World Wrestling Entertainment CEO [[Linda McMahon]] is running for the Republican nomination, and has spent over $50 million of her own money on the race. Financial services executive [[Peter Schiff]] is also running.  

*'''Delaware'''

*'''Delaware'''

[[Joe Biden]] was simultaneously elected to a seventh term in the Senate and Vice President at the same time. Democrat Governor [[Ruth Ann Minner]] appointed a "caretaker" Senator, [[Ted Kaufman]]. Moderate Republican nine-term Congressman [[Michael Castle]], former governor and lieutenant governor, has entered the race and is favored to win the election with State Attorney General [[Beau Biden]] not running. <ref>http://rothenbergpoliticalreport.blogspot.com/2009/10/delaware-senate-moved-to-lean-takeover.html</ref> Polls show Castle leads Biden by a conformable margin. <ref>http://www.publicpolicypolling.com/pdf/PPP_Release_DE_310.pdf</ref> <ref>https://secure.townnews.com/shared-content/subscription/authenticate/index.php?mode=start&domain=ledgerdelaware.com&usereg=&url=http%3A%2F%2Fwww.ledgerdelaware.com%2F%2Farticles%2F2009%2F05%2F04%2Fnews%2Fdoc49ffa1c1afca0453799066.txt%2F&discover=0&amex=0</ref> <ref>http://www.castleforsenate.com/archives/313</ref>Republican political analyst Christine O'Donnell (who ran against Biden in 2008 and received 35% of the vote) has also announced her candidacy.

[[Joe Biden]] was simultaneously elected to a seventh term in the Senate and Vice President at the same time. Democratic Governor [[Ruth Ann Minner]] appointed a "caretaker" Senator, [[Ted Kaufman]]. Moderate Republican nine-term Congressman [[Michael Castle]], former governor and lieutenant governor, has entered the race and is heavily favored to win the election with State Attorney General [[Beau Biden]] not running. <ref>http://rothenbergpoliticalreport.blogspot.com/2009/10/delaware-senate-moved-to-lean-takeover.html</ref> Polls show Castle leads Biden by a conformable margin. <ref>http://www.publicpolicypolling.com/pdf/PPP_Release_DE_310.pdf</ref> <ref>https://secure.townnews.com/shared-content/subscription/authenticate/index.php?mode=start&domain=ledgerdelaware.com&usereg=&url=http%3A%2F%2Fwww.ledgerdelaware.com%2F%2Farticles%2F2009%2F05%2F04%2Fnews%2Fdoc49ffa1c1afca0453799066.txt%2F&discover=0&amex=0</ref> <ref>http://www.castleforsenate.com/archives/313</ref>Republican political analyst Christine O'Donnell (who ran against Biden in 2008 and received 35% of the vote) has also announced her candidacy. The Democratic nominee will likely be New Castle County Executive Chris Coons, who trails Castle in the polls. <ref>http://www.dailykos.com/storyonly/2010/2/25/840648/-DE-SEN:-Castle-Leads,-But-</ref>

*'''Florida'''

*'''Florida'''

Republican Governor [[Charlie Crist]], who once enjoyed high approval ratings, appointed [[George LeMieux]] upon the resignation of Senator [[Mel Martinez]]. LeMieux is holding the seat temporarily for Governor Crist who will run for the Senate in 2010. He is the establishment pick for the Republican nomination, but is being challenged by conservative Florida House Speaker [[Marco Rubio]], who is leading by 32 points according to Public Policy Polling. <ref>[http://www.rollcall.com/news/43979-1.html Poll Shows Rubio Ahead by 32 Points in Florida, RollCall.com, March 9, 2010]</ref> Crist alienated conservatives when he campaigned with President Obama in support for the $787 billion economic stimulus package, which was entirely opposed by the Florida Republican federal delegation. Democrats have recruited lesser known candidates, including 17th district Representative Kendrick Meek and North Miami Mayor Kevin Burns. Public Opinion Shows show both Crist and Rubio would lead their Democrat opponents. <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/florida/election_2010_florida_senate</ref>

Republican Governor [[Charlie Crist]], who once enjoyed high approval ratings, appointed [[George LeMieux]] upon the resignation of Senator [[Mel Martinez]]. LeMieux is holding the seat temporarily for Governor Crist who will run for the Senate in 2010. He is the establishment pick for the Republican nomination, but is being challenged by conservative Florida House Speaker [[Marco Rubio]], who is leading by 32 points according to Public Policy Polling. <ref>[http://www.rollcall.com/news/43979-1.html Poll Shows Rubio Ahead by 32 Points in Florida, RollCall.com, March 9, 2010]</ref> Crist alienated conservatives when he campaigned with President Obama in support for the $787 billion economic stimulus package, which was entirely opposed by the Florida Republican federal delegation. Democrats have recruited lesser known candidates, including 17th district Representative [[Kendrick Meek]] and North Miami Mayor [[Kevin Burns]]. Public Opinion Shows show both Crist and Rubio would lead their Democratic opponents. <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/florida/election_2010_florida_senate</ref>

*'''Indiana'''

*'''Indiana'''

*'''Illinois'''

*'''Illinois'''

Democrat Senator [[Roland Burris]] has been plagued by controversies. Burris was appointed to replace Barack Obama by Governor [[Rod Blagojevich]], who had been arrested on a variety of federal corruption charges (including for trying to "sell" Obama's Senate seat). Burris was then accused of committing perjury after he admitted to not testifying truthfully at a committee investigating Governor Blagojevich. Burris has announced he will not seek a full term in 2010.

Democratic Senator [[Roland Burris]] has been plagued by controversies. Burris was appointed to replace Barack Obama by Governor [[Rod Blagojevich]], who had been arrested on a variety of federal corruption charges (including for trying to "sell" Obama's Senate seat). Burris was then accused of committing perjury after he admitted to not testifying truthfully at a committee investigating Governor Blagojevich. Burris has announced he will not seek a full term in 2010.

Republicans see this as a pickup opportunity. National Journal ranked Illinois the second most likely seat to change party. Moderate-GOP Congressman [[Mark Kirk]], representing a Democratic-leaning district that covers suburban [[Chicago]], easily won the Republican nomination, while Illinois State Treasurer Alexi Giannoulias defeated Chicago Inspector General David Hoffman in a close primary. A February 2010 Rasmussen poll has Kirk leading Giannoulias 46%-40%. <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/illinois/election_2010_illinois_senate</ref>

Republicans see this as a pickup opportunity. National Journal ranked Illinois the second most likely seat to change party. Moderate-GOP Congressman [[Mark Kirk]], representing a Democratic-leaning district that covers suburban [[Chicago]], easily won the Republican nomination, while Illinois State Treasurer [[Alexi Giannoulias]] defeated Chicago Inspector General [[David Hoffman]] in a close primary. A February 2010 Rasmussen poll has Kirk leading Giannoulias 46%-40%. <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/illinois/election_2010_illinois_senate</ref>

*'''Kansas'''

*'''Kansas'''

Incumbent Republican [[Sam Brownback]] is honoring his campaign pledge to serve only two terms. One of the most conservative states in the country, no prominent Democrats have announced their candidacy. The Cook Political Report lists this race as "solid Republican." <ref>http://www.cookpolitical.com/races/senate/ratings.php</ref> The competitive race will be the Republican primary between 1st district Congressman Jerry Moran and 4th district Congressman Todd Tiahrt. Public Opinion Polls show Moran and Tiahrt in a dead heat. <ref>http://www.dailykos.com/storyonly/2009/2/5/145250/8955/1003/693618</ref> <ref>http://www.surveyusa.com/client/PollReport.aspx?g=8f81dfbd-e5cb-4de9-abd9-25a3f36cb619/</ref> <ref>http://www.surveyusa.com/client/PollReport.aspx?g=b3d19e14-c0c6-4bf9-9820-a605c88f57f8/</ref> Moran's voting record is moderate, he supported an increase in the [[minimum wage]] and voted to expand the State Children's Health Insurance Program (SCHIP), while Tiahrt is strongly conservative. Senator [[John McCain]] has endorsed Jerry Moran. <ref>http://www2.ljworld.com/weblogs/kansas_congress/2009/sep/21/mccain-endorses-moran-for-senate-bid/</ref>  

Incumbent Republican [[Sam Brownback]] is honoring his campaign pledge to serve only two terms. One of the most conservative states in the country, no prominent Democrats have announced their candidacy. The Cook Political Report lists this race as "solid Republican." <ref>http://www.cookpolitical.com/races/senate/ratings.php</ref> The competitive race will be the Republican primary between 1st district Congressman [[Jerry Moran]] and 4th district Congressman [[Todd Tiahrt]]. Public Opinion Polls show Moran and Tiahrt in a dead heat. <ref>http://www.dailykos.com/storyonly/2009/2/5/145250/8955/1003/693618</ref> <ref>http://www.surveyusa.com/client/PollReport.aspx?g=8f81dfbd-e5cb-4de9-abd9-25a3f36cb619/</ref> <ref>http://www.surveyusa.com/client/PollReport.aspx?g=b3d19e14-c0c6-4bf9-9820-a605c88f57f8/</ref> Moran's voting record is moderate, he supported an increase in the [[minimum wage]] and voted to expand the State Children's Health Insurance Program (SCHIP), while Tiahrt is strongly conservative. Senator [[John McCain]] has endorsed Jerry Moran. <ref>http://www2.ljworld.com/weblogs/kansas_congress/2009/sep/21/mccain-endorses-moran-for-senate-bid/</ref>  

*'''Kentucky'''

*'''Kentucky'''

Republicans had a victory when unpopular incumbent Senator [[Jim Bunning]] announced he would not seek a third term. Kentucky Secretary of State [[Trey Grayson]] is seeking the Republican nomination, however is being challenged by [[Libertarian Republican]] [[Rand Paul]], an eye surgeon who is the son of Texas Congressman [[Ron Paul]]. Paul has received the endorsment of former [[Alaska]] Governor [[Sarah Palin]]. <ref>http://www.latimes.com/news/nationworld/nation/wire/sns-ap-us-palin-ky-senate-race,0,6228585.story</ref>

Republicans had a victory when unpopular incumbent Senator [[Jim Bunning]] announced he would not seek a third term. Kentucky Secretary of State [[Trey Grayson]] is seeking the Republican nomination, however is being challenged by Libertarian-leaning Republican [[Rand Paul]], an eye surgeon who is the son of Texas Congressman [[Ron Paul]]. Paul has received the endorsment of former [[Alaska]] Governor [[Sarah Palin]]. <ref>http://www.latimes.com/news/nationworld/nation/wire/sns-ap-us-palin-ky-senate-race,0,6228585.story</ref> On the Democratic side, Lieutenant Governor [[Daniel Mongiardo]] (who lost to Bunning in 2004) and state Attorney General Jack Conway are running.

On the Democratic side, Lieutenant Governor [[Daniel Mongiardo]] (who lost to Bunning in 2004) and state Attorney General Jack Conway are running. Public Opinion Polls show both Grayson and Paul leading Conway and Mongiardo. <ref>http://www.publicpolicypolling.com/pdf/PPP_Release_KY_1223.pdf</ref><ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/kentucky/election_2010_kentucky_senate</ref>

Paul has opened a comfortable lead in the primary <ref>http://www.dailykos.com/statepoll/2010/3/17/KY/458</ref>and show both Grayson and Paul leading Conway and Mongiardo. <ref>http://www.publicpolicypolling.com/pdf/PPP_Release_KY_1223.pdf</ref><ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/kentucky/election_2010_kentucky_senate</ref>

*'''Missouri'''

*'''Missouri'''

*'''Ohio'''

*'''Ohio'''

Moderate Republican [[George Voinovich]] has announced he will not seek a third term. The Democratic field includes Lieutenant Governor [[Lee Fisher]] and Ohio Secretary of State [[Jennifer Brunner]]. Fisher has received the endorsement of Democratic Governor [[Ted Strickland]]. Meanwhile, Republicans have rallied behind [[Rob Portman]], former Congressman and Director of the [[Office of Management and Budget]]. The race is expected to be one of the most competitive in the election cycle. A September 2009 Rasmussen poll has Portman leading Fisher and Brunner by a narrow margin. <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/ohio/election_2010_ohio_senate_race</ref>

Moderate Republican [[George Voinovich]] has announced he will not seek a third term. The Democratic field includes Lieutenant Governor [[Lee Fisher]] and Ohio Secretary of State [[Jennifer Brunner]]. Fisher has received the endorsement of Democratic Governor [[Ted Strickland]]. Meanwhile, Republicans have rallied behind [[Rob Portman]], former Congressman and Director of the [[Office of Management and Budget]]. The race is expected to be one of the most competitive in the election cycle. A March 2010 Rasmussen poll has Portman leading Fisher and Brunner. <ref>http://www.rasmussenreports.com/public_content/politics/elections2/election_2010/election_2010_senate_elections/ohio/election_2010_ohio_senate</ref>

===Democratic incumbents===

===Democratic incumbents===