Senate Majority Whip Dick Durbin (D-Ill.) prepares for an interview in the Spin Room Thursday following the vice-presidential debate in Danville, Ky.

An aggressive, self-assured Democratic Vice President Joe Biden responded to last week’s poor debate performance by President Barack Obama by repeatedly challenging Republican challenger Paul Ryan on taxes, plans to cut entitlement and on foreign policy.

During Thursday’s debate at Centre College, moderator Martha Raddatz often demanded specific examples of Ryan’s plans to close unidentified loopholes as part of Republican nominee Mitt Romney’s plan to cut taxes or on plans by either candidate to reform entitlement programs.

Ryan didn’t give ground – but he didn’t give specifics either. Biden cited a litany of statistics about the impact of Ryan’s entitlement reform proposals and Romney’s tax plans, frequently accusing the Republicans of “loose talk,” although he too failed to lay out a specific plan on how to reform Medicare, Medicaid and social security.

Unlike Obama last week, Biden made sure to mention Romney’s unscripted comments about the “47 percent” of Americans who he says pay no income taxes and are dependent on government services. And he said “people from where I come from can’t afford” Ryan’s proposal to offer what Democrats call a voucher and Republicans call “premium support” to buy private insurance instead of relying on Medicare.

Ryan, on the other hand, said without reforming the program, it cannot survive to assist future generations.

When asked what each man would do for the country that another couldn’t, Ryan said a Romney/Ryan administration would stick by their promises to get the economy growing and create jobs.

Biden said his record stands for itself. “Everyone knows I do what I say I’ll do. My whole life has been devoted to leveling the playing field for the middle class.”

Biden often directed his answers on domestic policies to the middle class while Ryan again and again defended his budget proposals, saying they would create jobs and benefit all economic classes.

Reaction was predictable: Republicans like Sen. Mitch McConnell said Ryan “was in command of the issues” and criticized Biden for sounding angry and often interrupting Ryan – a complaint similar to Democrats about Romney in last week’s presidential debate which most said Romney won.

“The vice president constantly interrupting, making facial expressions, it reminded me of Al Gore in 2000 when he walked all the way over and got in the face of President Bush,” McConnell said. “Clearly the vice president was animated – he’s very good about that.”

David Axelrod, the Obama campaign’s spokesman and advisor, said the complaint about Biden’s demeanor or frequent interruptions “is a loser’s lament.”

He criticized Ryan’s inability to offer specifics about which loopholes the Romney tax plan would close and said Biden “bested Ryan on foreign policy.” He said Ryan “serially refused to answer” questions about specific proposals.

“I think it was an enormously informative debate,” Axelrod said. “I think the vice president spoke with conviction and he actually cited facts and drew on a lifetime of experience.”

Congressman John Yarmuth, D-Louisville, said Biden “did a really good job tonight. I really think Joe Biden did a good job of pointing out how empty some of the ideas of Ryan and Romney are.”

Illinois Democratic Sen. Dick Durbin – whose father was born in Sunfish, Ky. In Republican Edmonson County – said Biden won the debate “with passion, conviction and with facts.”

“When it was all over (Biden) didn’t let Ryan dance around as Romney did last week on some of those questions,” Durbin said. “And I think Martha Raddatz did a good job of zeroing in on specifics, too.”

Sen. Rand Paul, R-Ky., said Ryan “came out far superior, particularly on the economic issues.”

But Paul didn’t try as other Republicans did after the debate try to portray Ryan’s answers as specific.

“You know I think his point is well-taken, that it’s hard to have a tax reform bill, maybe a thousand pages long, but you know I think he set the parameters for what they’re for,” Paul said.

Paul, who favors tax cuts along with spending cuts both in domestic and defense spending, did say he doesn’t support the recent Romney characterization that his tax plan is essentially revenue neutral.

McConnell said Ryan “did an excellent job of pointing out the differences here.” He then repeated Republican arguments that the Obama administration has failed to generate a robust recovery.

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Ronnie Ellis writes for CNHI News Service and is based in Frankfort. Reach him at rellis@cnhi.com. Follow CNHI News Service stories on Twitter at twitter.com/cnhifrankfort.