The trend for previous midterm elections reveals that the 28% re-elect figure puts the sitting majority party in a danger zone. In the two recent midterm elections in which the congressional balance of power changed (1994 and 2006), the percentage of voters saying most members deserved to be re-elected fell below 40%, as it does today. By contrast, in 1998 and 2002, when the existing Republican majority was maintained, 55% or better held this view.

Additionally, 65% of registered voters — the highest in Gallup history, and by far the highest in any recent midterm year — now say most members of Congress do not deserve re-election.