http://www.theobamanews.com/Editorialblogs/why-obama-could-use-a-big-convention-bump/ But according to Tom Holbrook, professor of political science at the University of Wisconsin-Milwaukee and author of "Do Campaigns Matter?", these stats are mere distractions. The important thing to watch is what happens in the polls after the conventions. We called Holbook this morning to find out why. Excerpts: Wed, 20 Aug 2008 14:37:40 CDT en