Rasmussen has historically been pro-Republican. (link, link, link, link, link, link) And this time they probably overestimated Romney's convention bounce by ... a ton, and now have numbers they can't explain in a Republican friendly way the way they usually do.

Rasmussen, as noted in The Hill on September 2:



A Rasmussen poll released Sunday differs from Reuters and shows Romney holding his convention bounce. The conservative polling outlet found Romney with a four-point lead over Obama, whom he trailed by two points before the convention in the same poll. Rasmussen now shows Romney leading the president with 48 percent support to 44.

The Rasmussen Reports daily Presidential Tracking Poll for Sunday shows President Obama attracting support from 49% of voters nationwide, while Mitt Romney earns 45% of the vote.

A week later from Rasmussen's site Obama has gone from down four points to up four points. An 8 point surge.

But that isn't all the polling goodness. Reuters says that Romney lost a point after his convention. Reuters/Ipsos: