His father was in the crucial primary state of New Hampshire on Thursday. During a college campus stop, Ron Paul said he hasn't ruled out running for president again but isn't on the verge of making a decision.

Ron Paul said his focus right now is on the nation's economy and whether it worsens, signaling its course could influence his decision.

"If we get a reprieve and things just look great, I might not be as enthusiastic," the elder Paul told reporters after a speech at the University of New Hampshire in Durham, N.H. "But if it continues like right now, it makes it almost inevitable that somebody will have to start talking about what we need to do."