Happening Now: Ron Paul not backing McCain

Watch Ron Paul address the National Press Club.

(CNN) - Republican Ron Paul is bucking his own party and urging his supporters to vote for third party candidates, at an event at the National Press Club.

Watch Ron Paul's event on CNN.com/live

Earlier: Ron Paul to announce presidential endorsement plans

UPDATE: This event has ended, but stay with CNN.com/live for all the day's events on the campaign trail.