Shall we start referring to this as the Palin-bump

It's starting to look like John McCain's historic selection of Sarah Palin hasn't done him any favors in the polls.
Here's this morning's Rasmussen tracking poll: Obama 51%, McCain 45%, outside of the ±2% margin of error. Obama was up 49%-46% yesterday, suggesting that Palin's scandals may have helped him to double his lead in just one day of sampling.
And the new Hotline/Diageo poll has Obama up 48%-39%, compared to a 44%-40% lead from just one week ago.
Late Update: Three more polls all show Obama leading by a substantial margin. The daily Gallup tracking poll has Obama up 50%-42% -- the first time ever that he's reached the 50% threshold in their poll. The USA Today/Gallup poll has Obama up 50%-43%, and ARG has Obama up 49%-43%.
There is also yesterday's CBS poll, which gave Obama a 48%-40% lead.
http://tpmelectioncentral.talkingpointsmemo.com/2008/09/two_more_polls_show_obamas_lea.php(links to all the polls are on the TPM website)