The latest Democracy Corps survey in the congressional battleground finds that the nation's deepening financial crisis "is taking its toll, not on incumbents, but specifically on Republicans, resulting in a significant shift in the electoral playing field in the Democrats' favor."
In the 10 Democratic seats that might have been vulnerable, Democratic candidates have vaulted ahead from a dead heat to an impressive 12-point advantage (54 to 42 percent).
Across the 50 Republican-held districts surveyed, Democratic candidates are fighting their Republican opponents to a draw - unchanged from a week ago. But Obama has moved into the lead in these Republicans seats, creating a top-of-ticket help in this unlikely place.
"These results are produced by an environment that has become even more toxic for Republicans. The proportion of voters who believe the country is off on the wrong track is at a new record in this Republican battleground and the favorability of both parties has declined but the Republicans more so. John McCain's standing has plummeted even in these Republican-leaning areas."