Udall and Schaffer: 20 questions

The two likely candidates in this year's U.S. Senate contest in Colorado, Rep. Mark Udall, a Democrat, and former Rep. Bob Schaffer, a Republican, served side-by-side in Congress from 1999 through 2002.

Over those four years, they cast 2,036 votes together, often on symbolic or non-controversial matters. And yet they still managed to disagree more than half the time -- 1,078 times, to be precise. But who's counting?

In Colorado, it's rare to have such an extensive paper trail showing what separates the two candidates.

So below, we invite you to vote along with Schaffer and Udall on 20 different questions they faced. At the end, you'll learn how often you agreed with each one.

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