Keep in mind that a substantial fraction of the votes in Texas have already been cast. Early voting has been going on for the past two weeks and ends today. If Richardson wanted to have an impact on this primary, he's already too late for many of the voters.

Meanwhile, the weird thing about Texas' Democrats is that they have both a primary *and* a caucus. As I understand it, the votes cast in the primary are used to select 2/3 of the delegates, and the caucus procedure selects the other 1/3 of the delegates. And, just to make it more fun, none of these caucuses have actually mattered before, so you don't have a huge body of people who know the rules of the game. Suddenly, you have all these fresh faces showing up, which could lead to some measure of chaos.

(I was reading our student newspaper today, and it had a full-page ad from MoveOn.org, explaining to students how they should get engaged in their civic duty and "vote twice.")