The chart below tracks responses to a generic ballot question – asking voters which party’s candidate they would support in their own Congressional district – across polls. It includes all national-level results on this question which meet CNN’s standards for reporting, including surveys of all US adults, those of registered voters and those of likely voters.

Poll
Dates DemocratsRepublicans Other/ Don't know/ Wouldn't vote Sample Size Sample Type Margin of Error
Washington Post/ABC
October 30 – November 2 48% 50% 2% 708 Likely voters +/-4.5
Reuters/Ipsos
October 31 – November 1 37% 36% 27% 1,004 Adults +/-3.8
CNN
October 26-31 47% 51% 3% 992 Likely voters +/-3.8
CNN
October 26-31 46% 47% 7% 1,290 Registered voters +/-3.4
NPR/PBS/Marist
October 24-27 46% 49% 5% 1,200 Likely voters +/-4.2
NPR/PBS/Marist
October 24-27 45% 46% 8% 1,469 Registered voters +/-3.8
Wall Street Journal
October 22-26 44% 46% 9% 1,500 Registered voters +/-2.5
CBS/YouGov
October 26-28 45% 47% 9% 1,899 Likely voters +/-2.6
FiveThirtyEight/Ipsos
October 13-23 41% 41% 17% 937 Likely voters +/-3.7
Reuters/Ipsos
October 24-25 34% 32% 34% 1,005 Adults +/-3.8
Pew
October 10-16 41% 40% 19% 3,993 Registered voters +/-1.8
Reuters/Ipsos
October 17-18 36% 35% 30% 1,022 Adults +/-3.8
NYT/Siena
October 9-12 45% 49% 6% 792 Likely voters +/-4.1
Fox
October 9-12 44% 41% 15% 1,206 Registered voters +/-2.5
CBS/YouGov
October 12-14 45% 47% 8% 1,753 Likely voters +/-2.8
CNN
September 3 – October 5 50% 47% 4% 1,198 Likely voters +/-4
CNN
September 3 – October 5 46% 43% 10% 1,577 Registered voters +/-3.5
KFF
September 15-26 47% 43% 10% 1,291 Registered voters +/-4
Reuters/Ipsos
October 10-11 36% 32% 31% 1,004 Adults +/-3.8
NPR/Marist
September 27-29 46% 44% 10% 1,562 Registered voters +/-4.2
FiveThirtyEight/Ipsos
September 6-19 41% 41% 19% 930 Likely voters +/-3.7
Reuters/Ipsos
September 26-27 37% 32% 31% 1,004 Adults +/-3.8
Grinnell College/Selzer & Co.
September 21-25 46% 42% 12% 563 Likely voters +/-4.1
CBS/YouGov
September 21-23 45% 46% 7% 1,954 Likely voters +/-2.8
Washington Post/ABC
September 18-21 46% 47% 7% 908 Registered voters +/-4
Marquette Law School
September 7-14 47% 41% 12% 1,282 Registered voters +/-3.6
Reuters/Ipsos
September 19-20 34% 33% 33% 1,004 Adults +/-3.8
NYT/Siena
September 6-14 46% 44% 10% 1,399 Registered voters +/-3.6
Fox
September 9-12 44% 41% 15% 1,201 Registered voters +/-2.5
Reuters/Ipsos
September 12-13 37% 33% 30% 1,003 Adults +/-3.8