By Jack Fink

ADDISON (CBSDFW.COM) – During a Wednesday fundraiser, GOP presidential hopeful Ron Paul said nothing has changed.

One day after opponent Rick Santorum suspended his campaign, effectively clearing the way for Mitt Romney to win the party’s nomination, Paul insists he’s staying in.

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“It’s way too early to be talking about when I’m going to quit,” Paul said. “It’s not quite there mathematically; it’ll be difficult but not impossible. Who would have thought yesterday Rick Santorum was going to drop out? What happens if he releases his delegates? And if he did that, a lot of them were anti-Romney people.”

Paul said he hopes to have a heavy impact upon the summer’s Republican convention.

“I’d like to see foreign policy changed to one of national defense rather than pre-emptive war,” the Surfside congressman said.

Paul raised tens of thousands of dollars at a luncheon Wednesday in Addison. Even though he won’t win the nomination, his supporters say their contributions are worth every penny.

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“I believe it’s going very well actually,” said supporter Janie Lucero. “He’ll have my support all the way.”

Steve Probst brought his 14-year-old son Chase to the event from Austin.

“It’s not a waste of money because you’re supporting a movement,” he said.

Even those supporters who couldn’t attend the fundraiser gave Paul their vocal support.

“I understand the odds,” Paul said. “I think you do what you say you’re going to do, and run an earnest race and not give up before the race is over.”

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The Texas Primary is May 29 and the state will award delegates proportionally. Santorum wanted to change that to winner-takes-all delegates, but Paul wants to keep it proportional.