Former Sen. Rick Santorum, R-Pa., has surged in recent national polls and that could spell trouble for former Massachusetts Gov. Mitt Romney in his bid for the Republican presidential nomination.
On Feb. 28, the GOP candidates face off in presidential primaries in Michigan and Arizona, which will launch them into the biggest day of the primary season -- Super Tuesday, Mar. 6 -- just two weeks away.
Considered a dark horse earlier in the campaign, Santorum now leads the Republican pack. His conservative ideas have given him a big boost among primary voters.
"Freedom isn't to do what you want to do. It's to do what you ought to do. Right?" the former Pennsylvania senator recently asked at one of his campaign stops.
Santorum is spending a lot of time talking social issues. Most recently, he began taking aim at insurance coverage for prenatal testing. He said testing leads to more abortions of children with birth defects.
"They are discovered in the womb, doctors encourage and in some cases almost insist they abort these children," Santorum said.
Meanwhile, Romney is under the gun to perform well in his native state of Michigan next Tuesday. He's touting his business credentials and ability to get the economy back on track.
"I'm the only one who spent the majority of his career in the private sector. I understand what it takes to create jobs and grow jobs," he explained.
However, in a sign of how vulnerable Romney may be, there's a new attack on one of his signature successes, his stewardship of the 2002 Winter Olympics.
"My leadership helped save the Olympics from scandal," the former Massachusetts governor said.
But a Salt Lake City newspaper story disagreed with him, reporting that Romney's work in getting federal earmarks helped fund the most expensive games in U.S. history.
Not to be forgotten in the Republican fight for the nomination is former House Speaker Newt Gingrich, R-Ga. Although his poll numbers have sagged, he's pressing on with his campaign.
"I think for the young people here my number one message is that we can change things. We are not trapped into decay. We are not trapped into weakness in the world. We're not trapped into a decaying culture," he said.
When it comes to fund raising, Romney still leads the GOP pack. He raised more than $6 million last month. His campaign argues he's the only candidate with the funds and organization to beat President Barack Obama.