John McCormack with a great and bookmark-worthy analysis today.
Democrats hold the registration advantage over Republicans in four of six battleground states that will play a key role in the presidential election, even as Republicans and independents have recorded larger net gains since late 2008, data compiled by Bloomberg shows.
Democrats have the edge over Republicans in Florida, Iowa, Nevada and North Carolina. In Colorado and New Hampshire, Republicans outnumber Democrats, according to the analysis of state data. Three other battlegrounds -- Ohio, Virginia and Wisconsin -- don’t report registration statistics by party.
Btw, be careful about that Republican registration advantage in Colorado. In the swing counties outside of Denver, the GOP holds a registration edge over Democrats, but there's a huge number of unaffiliated voters who lean Democratic.
Good proof of that came in the 2010 election when Democrats Michael Bennet and John Hickenlooper won those counties (albeit narrowly) in a very favorable year for Republicans.
[Hat tip: Jon Ward]