2008 was D+7. Of course 2012 wont have as much D enthusiasm, but they will still outnumbers R’s at the polls. D+4 seems reasonable, and Romney should act as though it will be D+7.
In 2010 it was R+1
During August 2012, 37.6% of Americans considered themselves Republicans. That’s up from 34.9% in July and 35.4% in June. It’s also the largest number of Republicans ever recorded by Rasmussen Report since monthly tracking began in November 2002.