Politics

The Republican presidential candidates won't argue their cases to thousands of conservatives gathered in Washington until Friday when Mitt Romney, Rick Santorum and Newt Gingrich are scheduled to speak.

(Ron Paul is skipping the event.)

But if Thursday's opening day of the American Conservative Union's annual star-studded Conservative Political Action Conference — CPAC — is any indication, they all have a lot of persuading to do.

A note to the Republican presidential candidates heading to Washington for the Conservative Political Action Conference: some of the events could make you uncomfortable if you're planning to tack to the center in your general election campaign.

When it comes to counting GOP delegates this year, there seem to be as many different tallies as there have been primary contests. NPR launched its own delegate tracker this week. As we noted on Wednesday, it only counts delegates officially awarded by state or party rule.