The candidates for U.S. Senate are sitting down with us in advance of the August 10th primaries.  First, we heard from Democratic incumbent Michael Bennet. Now,  his challenger, former  speaker of the Colorado House Andrew Romanoff.  Many thought Romanoff should have been appointed to the Senate when the seat opened up last year. He'd served eight years in the legislature-- never losing an election. Bennet, on the other hand, was brand new to politics. And although Bennet's won President Obama's endorsement and raised more money, it's the 43-year-old Romanoff who landed the top spot on the primary ballot.

Listen to Ryan Warner's conversation with Michael Bennet.