Ted S. Warren, Associated Press
BOISE, Idaho. — The latest Republican to surge in polls, Rick Santorum is trying to turn his newfound strength into something lasting.
Curious Republicans now pack his rallies. Supporters have funneled nearly $4 million to his formerly empty campaign account over the past seven days. And his staff is plotting an aggressive strategy to challenge Mitt Romney in Romney's native Michigan and beyond.
But things don't look so strong just beneath the surface.
Santorum is underfunded and outmanned. He's still lacking in organization, a month and a half into the primary season. And, after he won three contests in a single day last week, his opponents — on the right and the left — have begun their own efforts to tear him down.
An upbeat Santorum declared "We're building" in a brief interview in Tacoma, Wash., on Tuesday before heading to Idaho for campaign events. "We've got a great volunteer base. In some states we're going to have staff. Other states we aren't. We're going to use volunteers."
His challenges were on display this week in Tacoma, where hundreds of supporters waited on cold, wet cement stairs in the dark to see the Republican presidential candidate with whom they're barely familiar.
"I don't know a lot about him, except I know he's more conservative than some of the other candidates like Mitt Romney," said Tanya Franklin, a 54-year-old airline reservationist, who says she'll probably vote for Santorum in her state's March 3 caucuses.
The former Pennsylvania senator has surged to a virtual tie with Romney in nationwide polling following his surprising sweep in Colorado, Minnesota and Missouri last week. But, as Franklin suggests, his popularity may have less to do with who he is than who he isn't. Santorum is not Romney. And with Newt Gingrich's recent decline, that's enough for some conservatives — at least for now.
Santorum had 30 percent support to 28 percent for Romney in a national poll released this week by the Pew Research Center. But the same poll said 31 percent of all adults had never heard of or couldn't rate him. That's a significantly higher number than for Romney, Gingrich, or Ron Paul. Even among Republicans, one in five told Pew they didn't know enough about Santorum to rate him.
Romney and others are now working to make sure that changes.
The long-time front-runner for the nomination, Romney has deployed surrogates such as a former Santorum Senate colleague, Jim Talent of Missouri, to attack Santorum's support for earmarks in Congress. The conservative Club for Growth has been equally critical. And Romney has been aggressive on the campaign trail, suggesting in recent days that Santorum and Gingrich represent the kind of overspending Washington insiders the tea party abhors.
At the same time, left-leaning groups such as the Center For American Progress and Emily's List are going after Santorum's comments on women. A staunch social conservative, Santorum has been critical of women serving in combat and sometimes in the workplace.
"Sadly the propaganda campaign launched in the 1960s has taken root," reads a passage in Santorum's book. "The radical feminists succeeded in undermining the traditional family and convincing women that professional accomplishments are the key to happiness."
"These things that Rick Santorum is attacking are broadly supported by women and American families," said Tara McGuinness of the Center for American Progress. "It isn't 1952. Most American families have two working parents."
Santorum says he's not going to sit back and just take such shots.
On Tuesday, he began running ads on Fox News Channel in Michigan. It was a signal to supporters — and to donors — that Santorum planned to contest the state where Romney grew up and his father served as governor.
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