Sen. Michael Bennet, center, D-Colo., celebrates after winning the Democratic primary on Tuesday, Aug. 10, 2010, in Denver. He was joined on stage by his wife, third right, children, Senator Mark Udall, left, and Gov. Bill Ritter, back right. (AP Photo/Ed Andrieski)

Photo by: Ed Andrieski

Sen. Michael Bennet, center, D-Colo., celebrates after winning the Democratic primary on Tuesday, Aug. 10, 2010, in Denver. He was joined on stage by his wife, third right, children, Senator Mark Udall, left, and Gov. Bill Ritter, back right. (AP Photo/Ed Andrieski)