Changes

Shelton won the Republican nomination for the state Senate on May 29, 2012 with 80.8 percent of the ballots casts over his intra-party rival, Derek Cooper.<ref>Texas Secretary of State, Elections Returns (Legislative),  May 29, 2012.</ref>In the general election Wendy Davis narrowly prevailed, 147,103 votes (51.1 percent) to Shelton's 140,656 (48.9 percent).<ref>Texas Secretary of State, General Elections Returns (Legislative), November 6, 2012.</ref>​

Shelton won the Republican nomination for the state Senate on May 29, 2012 with 80.8 percent of the ballots casts over his intra-party rival, Derek Cooper.<ref>Texas Secretary of State, Elections Returns (Legislative),  May 29, 2012.</ref>In the general election Wendy Davis narrowly prevailed, 147,103 votes (51.1 percent) to Shelton's 140,656 (48.9 percent).<ref>Texas Secretary of State, General Elections Returns (Legislative), November 6, 2012.</ref>​

On March 4, 2014, again seeking Davis' Senate seat, Shelton ran second in the Republican primary. He polled 15,689 votes (35.2 percent) to Konni Burton's 19,288 (43.2 percent). Three other candidates held the remaining but critical 21.6 percent of the vote.<ref name=republican>Texas Secretary of State, Republican primary election returns, March 4, 2014.<ref>Burton carried the endorsement of [[U.S. Senator]] [[Ted Cruz]], who called her a "tireless, unwavering warrior for the conservative cause".<ref name=kburton>{{cite web|url=​

On March 4, 2014, again seeking Davis' Senate seat, Shelton ran second in the Republican primary. He polled 15,689 votes (35.2 percent) to Konni Burton's 19,288 (43.2 percent). Three other candidates held the remaining but critical 21.6 percent of the vote.<ref name=republican>Texas Secretary of State, Republican primary election returns, March 4, 2014.</ref>Burton carried the endorsement of [[U.S. Senator]] [[Ted Cruz]], who called her a "tireless, unwavering warrior for the conservative cause".<ref name=kburton>{{cite web|url=​

http://www.breitbart.com/Breitbart-Texas/2014/03/17/SD10-Candidate-Konni-Burton-to-Start-Runoff-Campaign|title=Texas Senate Candidate Konni Burton to Start Runoff Campaign with Ted Cruz|publisher=breitbart.com|accessdate=March 30, 2014}}</ref> Other conservative figures who lined up with Burton over Shelton were state Representative Matt Krause of Fort Worth and former Republican National Committeeman Tim Lambert of [[Lubbock]], the president of the Texas Homeschool Coalition.<ref name=kburton/>Shelton carried the blessing of [[Mayor]] Betsy Price of Fort Worth, who describes him as "an advocate for business, job growth, and low taxes."<ref>{{cite web|url=http://www.drmarkshelton.com/|title=Fort Worth Mayor Betsy Price endorses Dr. Mark Shelton for Senate District 10|publisher=drmarkshelton.com|accessdate=March 30, 2014}}</ref>​

http://www.breitbart.com/Breitbart-Texas/2014/03/17/SD10-Candidate-Konni-Burton-to-Start-Runoff-Campaign|title=Texas Senate Candidate Konni Burton to Start Runoff Campaign with Ted Cruz|publisher=breitbart.com|accessdate=March 30, 2014}}</ref> Other conservative figures who lined up with Burton over Shelton were state Representative Matt Krause of Fort Worth and former Republican National Committeeman Tim Lambert of [[Lubbock]], the president of the Texas Homeschool Coalition.<ref name=kburton/>Shelton carried the blessing of [[Mayor]] Betsy Price of Fort Worth, who describes him as "an advocate for business, job growth, and low taxes."<ref>{{cite web|url=http://www.drmarkshelton.com/|title=Fort Worth Mayor Betsy Price endorses Dr. Mark Shelton for Senate District 10|publisher=drmarkshelton.com|accessdate=March 30, 2014}}</ref>​