Sounds astonishing news.

According to the chart, the gap on the NPR generic poll has been growing at one point every few months, and suddenly it almost doubles!

I'd expect the slide of GOP ratings into the toilet to continue - but is the sudden dive quite so easy to explain?

(According to Polling Report, there was a step change which occurred around the beginning of March from around +7-8 (with the Hotline Feb and ABC Jan polls (+15 and +16) as outliers) to around +14-16 for a number of polls.)

And how do strong positive generic results for Dems track with the fav/unfav for the Dems in Congress (which I think - no numbers - has been fairly consistently almost as deep in the toilet as for DeLay and Co!)?