Ron Paul insists he can still win

Republican presidential candidate Ron Paul insists he still could win his party's nomination despite not yet winning a single caucus or primary contest.

“It all depends on how you measure winning,” the veteran Texas congressman said Sunday on CNN's "State of the Union" program, noting that caucus states don't technically choose delegates until later in the year. “We think we’re going to have the most delegates out of Iowa … same thing in Maine.”

“The bottom line is who is going to get the delegates," he added, "and we think we’re doing pretty good.”

Host Candy Crowley, however, pressed back.

“It’s hard to see how you put together enough delegates," she said.

“You don’t know until the end," Paul retorted. “There’s every reason to believe this momentum will continue. It’s still relatively early. … Nobody actually knows the future.”