Colorado Republicans have added to their registration lead since January 1. Republicans had a 109,000 voter advantage as the campaign year began. Now Republicans are ahead by 118,000 active and new voters.
Democrats were only 7,000 votes behind Republicans in 2008.
Colorado uses a purge law that removes voters from the polls if they fail to vote. In 2008, the last presidential election, there were 2.6 million active voters and 2.4 million turned out. Hence, about 200,000 were purged.
In 2010, there were 2.4 million active voters, but only 1.8 million voted. They became the new active voter list, 600,000 below the 2010 active voter level (they were purged from the voter file). As of today, there are 2.2 million registered voters.