The poll, which surveyed Florida voters, was conducted by Suffolk University. I tracked down the poll’s internals, and here’s the relevant question:

Do you think the Republicans are intentionally stalling efforts to jumpstart the economy to insure that Barack Obama is not reelected?

Yes 49

No 39

Undecided 12

This is only one state, but as Steve notes, “it’s a large, diverse swing state that both parties take very seriously.” And nearly half of these voters say they believe this — even though the question is asked in a very provocative way.