Ron Paul said Tuesday he is the only Republican presidential candidate in the field with "credibility" on economic issues.

Even though Republicans have moved in his direction on issues such as skepticism of the Federal Reserve and drastic reductions in the size of government, other candidates are still "part of the status quo," according to the Texas congressman.

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"Others are hitting and I think this is good, and I'm very pleased with it, and we're getting better votes in the Congress today," he said on Fox Business Network. "But I just think the other candidates [are] pretty much a part of the status quo, with the leaning now, in a Republican primary, at least, toward less government. At least they state that."

Paul is looking to broaden his appeal to the GOP primary electorate after running a long-shot campaign for president in 2008. 

The main thrust of Paul's argument to voters this cycle is that the country has moved toward his small-government, anti-war attitudes after he was portrayed as an outsider in 2008. And he appears willing to throw his elbows at other candidates to make his point.

"I would say that the other candidates, you know, talking in some ways to similar to what I'm saying, but I think it's credibility, and I think it's the fact that I have rejected the status quo for a long time, and therefore, have the credibility of saying what we need to do is change things," he said. "The big problem is is over the years, we heard that so many times, and then, we finally get the Republicans in charge, and they act like Democrats."

Other candidates seem to be adopting Paul's positions. Former Minnesota Gov. Tim Pawlenty (R) said Tuesday he would not renominate Federal Reserve Chairman Ben Bernanke to another term if he were president.