A look back at the 2008 convention bumps
by kos
Before the Democratic convention, Aug. 25-28, 2008:
After the Democratic convention, on Sept. 2:
That was a 4.7-point bounce, decent but not spectacular. Then came the Republican National Convention, from Sept. 1-4:
That was a pretty good bump, a 9.3-point swing in John McCain’s direction. Not only did McCain have a compelling story, but Sarah Palin generated genuine excitement in those early days of her run. However, you can see in the graphs above what happened after that high-water mark for the McCain ticket.This doesn’t mean that Mitt Romney has hit his high-water mark. It just goes to show that in 2008, the Republican ticket took an unambiguous lead after both conventions. This year, Obama still leads in the polling composite even though they’ve finished their convention, and we’ve just started ours.
It’s a good place to be, assuming you are a Democrat rooting for the Obama-Biden ticket.