Changes

!Notes

!Notes

|-

|-

|North Carolina

|[[North Carolina]]

|Cunningham (D)

|Cunningham (D)

|<nowiki>+</nowiki>2.3

|<nowiki>+</nowiki>2.3

|Aggregate skewed slightly to the left due to an untrustworthy poll by the biased Change Research.<ref>[https://www.realclearpolitics.com/epolls/2020/senate/nc/north_carolina_senate_tillis_vs_cunningham-6908.html North Carolina Senate - Tillis vs. Cunningham]</ref>

|Aggregate skewed slightly to the left due to an untrustworthy poll by the biased Change Research.<ref>[https://www.realclearpolitics.com/epolls/2020/senate/nc/north_carolina_senate_tillis_vs_cunningham-6908.html North Carolina Senate - Tillis vs. Cunningham]</ref>

|-

|-

|Michigan

|[[Michigan]]

|Peters (D)

|Peters ([[Democrat|D]])

|<nowiki>+</nowiki>4.7

|<nowiki>+</nowiki>4.7

|Aggregate likely skewed to the left due to suspicious Ipsos/[[Reuters]] poll in addition to one by Change Research.<ref>[https://www.realclearpolitics.com/epolls/2020/senate/mi/michigan_senate_james_vs_peters-6964.html Michigan Senate - James vs. Peters]</ref>

|Aggregate likely skewed to the left due to suspicious Ipsos/[[Reuters]] poll in addition to one by Change Research.<ref>[https://www.realclearpolitics.com/epolls/2020/senate/mi/michigan_senate_james_vs_peters-6964.html Michigan Senate - James vs. Peters]</ref>

|-

|-

|Iowa

|[[Iowa]]

|Greenfield (D)

|Greenfield ([[Democrat|D]])

|<nowiki>+</nowiki>4.6

|<nowiki>+</nowiki>4.6

|Aggregate skewed to the left, largely due poll from highly untrustworthy source Quinnipiac;<ref>[https://www.realclearpolitics.com/epolls/2020/senate/ia/iowa_senate_ernst_vs_greenfield-7072.html Iowa Senate - Ernst vs. Greenfield]</ref> [[Iowa]] polling tends to overestimate Democrats, as occurred in the [[2018 Midterms]] with the state's gubernatorial election.

|Aggregate skewed to the left, largely due poll from highly untrustworthy source Quinnipiac;<ref>[https://www.realclearpolitics.com/epolls/2020/senate/ia/iowa_senate_ernst_vs_greenfield-7072.html Iowa Senate - Ernst vs. Greenfield]</ref> [[Iowa]] polling tends to overestimate Democrats, as occurred in the [[2018 Midterms]] with the state's gubernatorial election.

|-

|-

|Arizona

|[[Arizona]]

|Kelly (D)

|Kelly ([[Democrat|D]])

|<nowiki>+</nowiki>8.4

|<nowiki>+</nowiki>8.4

|Aggregate strongly skewed to the left due to unreliable/fake polling,<ref>[https://www.realclearpolitics.com/epolls/2020/senate/az/arizona_senate_mcsally_vs_kelly-6801.html Arizona Senate - McSally vs. Kelly]</ref> including one by [[CBS]]/YouGov analyzed [[Essay:Analyses_of_misleading_polls#October_21.2C_2020|here]].

|Aggregate strongly skewed to the left due to unreliable/fake polling,<ref>[https://www.realclearpolitics.com/epolls/2020/senate/az/arizona_senate_mcsally_vs_kelly-6801.html Arizona Senate - McSally vs. Kelly]</ref> including one by [[CBS]]/YouGov analyzed [[Essay:Analyses_of_misleading_polls#October_21.2C_2020|here]].

|-

|-

|Georgia

|[[Georgia]]

|Warnock (D)

|Warnock ([[Democrat|D]])

|<nowiki>+</nowiki>10.6

|<nowiki>+</nowiki>10.6

|Warnock lead largely due to backing by Democrat establishment and evaporating support for Lieberman; note election to be a jungle primary ([[United_States_Senate_elections,_2020#Georgia_.28special.29|see below]]).

|Warnock lead largely due to backing by Democrat establishment and evaporating support for Lieberman; note election to be a jungle primary ([[United_States_Senate_elections,_2020#Georgia_.28special.29|see below]]).