Sen. Michael Bennet (D-Colo.) is up with his first TV ad, on the eve of the all-important precinct caucuses in Colorado.

This is probably the first time many Coloradoans have seen or heard Bennet, so don't underestimate the importance of this ad.

Bennet has often been accused of a lack of charisma. This ad doesn't do much to fight the perception, but it does lay out some of the appointee's ethics proposals.