Hotline on call says the Colorado primary battle between Sen. Michael Bennet and challenger Andrew Romanoff is going down to the wire. Turnout of mail-in ballots is really high -- the only election with higher turnout was 2008 when Obama ran for President.

But the question remains whether Romanoff caught fire soon enough to take advantage of CO's new mail-in only primary system. Ballots reached voters on July 20th, and a record number have already been returned to the CO Sec. of State. Bennet and Romanoff are neck-and-neck in the latest polls, and it's a real toss-up as to who will emerge the victory come Wednesday.

TalkLeft has endorsed Sen. Michael Bennet due to Romanoff's poor record on crime issues. I also think Bennet has a greater chance of beating the Republicans state-wide in November. But either would be far superior to the Republican choices. If you didn't mail in your ballot, please drop it off at a service center today. For Denver locations, go here.