let’s see your computation. are you using total vote as the base, or are you comparing Democrat to Republican votes?
No, this isn’t which party GOT a vote, the D+7 and D+3 for 2008 and 2010 are the delta between voters registered to each party who showed up, it has nothing to do with HOW they voted.
IE Registered Democrats who voted represented 39% of hte people who voted, and Registered Remplicans represented 32% of the people who showed up to vote, is a D+7.
In 2008 the turnout was D+7, in 2010 it was D+3, this year I fully expect R+3-4
Has nothing to do with final vote total, or who voted for who.