After skipping the event last year, I just heard that McCain purchased a booth at CPAC, the annual conservative gathering in Washington coming up two weeks from now. CPAC attendees are pretty hard core conservatives — not exactly McCain’s base. Romney won the straw poll there last year, and at one point, McCain was actually booed by the crowd when they announced the poll results. Then again, CPAC is a few days after Super Tuesday, so it’s possible McCain could have locked up the nomination by then. It’ll be interesting to see how much of an olive branch to conservatives this is perceived to be.