Colorado Republican wraps up tough week on the trail

DeMint has made headlines in several GOP primaries this cycle. He was an early supporter of Florida Senate candidate Marco Rubio (R) -- he introduced him at the recent CPAC conference in Washington -- and backed conservative state Assemblyman Chuck DeVore (R) in California. He also toyed with the idea of backing developer Patrick Hughes's primary challenge to now-Illinois GOP Senate nominee Mark Kirk.

DeMint's support has become a counter-weight to Sen. John McCain (R-Ariz.), who is backing Republican Carly Fiorina in California and Norton in Colorado. McCain also backed Kirk in Illinois and he has supported Florida Gov. Charlie Crist (R) in the past.