He didn't win the Democratic Senate primary Tuesday, but physicist, "Jeopardy!" champion and Congressman Rush Holt (D-N.J.) is one heck of a thumb war player.

Comedy Central's Stephen Colbert learned this firsthand when he focused his "Better Know a District" segment on Holt's 12th district this week, to discuss, among other things, the merits of studying every "ology."

Below is video of the segment, which was filmed in advance of Tuesday's primary.