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Karen Santorum: ‘I’m looking to Tampa, but who knows?’

"We're taking it one day at a time, one step at a time, one primary at a time. We are in this for the long haul. I mean I'm looking to Tampa, but who knows?" said Santorum in an interview with Fox News, posted online Friday. 

"I don't know. Like I said, God has us on a path. I don't know what he has planned. I don't know how it will unfold. I really believe Rick is the guy, I do." 

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She praised her husband for being an "eternal optimist." 

"He keeps his focus and he says, 'Honey, don't get too high with the good polls and don't get down with the bad ones.' He says, 'we just keep plugging away.' That's his motto, 'keep plugging.' So, we'll keep plugging and see how things go," she added. 

Optimism may be a necessary character trait as rival GOP candidate Mitt Romney racks up political endorsements and leads by double-digits in most national polls. 

In the past week Romney received endorsements from Sen. Marco Rubio (R-Fla.), Rep. Paul Ryan (R-Wis.) and former President George H.W. Bush, as the Republican establishment continues to coalesce around the former Massachusetts governor. 

Santorum's next major challenge will be the upcoming Wisconsin primary next Tuesday, a critical winner-take-all contest with 42 delegates at stake. 

The former Pennsylvania senator is trailing Romney in the Badger State, according to a Marquette Law School poll released on Tuesday. Romney leads with 39 percent, followed by Santorum at 31 percent. Santorum led the same poll last month 34 percent to 18 percent over Romney.