MOBILE, Alabama – Influential conservative radio talk-show host Mark Levin endorsed Orange Beach businessman Dean Young for Alabama's 1st District congressman during his radio show Thursday.

Levin, in making his endorsement, called Young a "wholly decent man" and a "conservative" while blasting former state senator Bradley Byrne for receiving the endorsement and financial backing of the U.S. Chamber of Commerce.

"If you believe in individual liberty and the Constitution, then we need more men and women to stand up for you," Levin said. "You have an opportunity in the 1st District of Alabama to make a difference."

Young strategist Jonathan Gray praised Levin as a "fine American" and a "strong conservative who "understands the problems facing" the county and who "teaches the conservative values we need to get us back on track."

Alex Schriver, Byrne's campaign manager, said his candidate is focused on voter turnout.

"In these final four days, we're focused on talking to our supporters and make sure they are turning out to vote on Tuesday," he said.

Levin also criticized a powerful Byrne supporter -- the Chamber of Commerce – calling the group as supporters of amnesty for illegal aliens and the federal stimulus package while "trashing" U.S. Sens. Ted Cruz and Mike Lee.

Levin said that while Young would be "a hell of a member of Congress," Byrne would be a "hell of a member of the Chamber of Commerce."

The Chamber's endorsement,

, prompted Young to criticize the organization by claiming it was supporters of BP and President Barack Obama's immigration policy.

But Tweets posted Friday by the U.S. Chamber's National Political Director Rob Engstrom suggest that Young "actively sought" the organizations support. The Tweets were posted in an article earlier Friday on The Daily Caller.

Young admitted on Tuesday to filling out a chamber questionnaire, but that he did not seek the Chamber's endorsement.

Gray echoed those comments Friday.

"We filled it out just as we have filled out more than 100 questionnaires for various organizations," Gray said.

Levin, who declined to make a prediction in the highly contentious race, labeled Young as a Reagan and life-long conservative. Levin, himself, served as an adviser for several members of Ronald Reagan's cabinet.

Levin, before the Sept. 24 primary, endorsed Quin Hillyer for the congressional seat. Hillyer finished fourth in the election.

Hillyer, a Byrne supporter, called Levin a friend but someone who "needs to do his homework."

"Mark has known me personally and has been an ally for years and said so when he endorsed me," Hillyer said. "Now he says he is endorsing Dean based only on what he has read. An endorsement based on long-range impressions rather than direct knowledge isn't worth a second thought by voters."