Rick Santorum beats Mitt Romney in Louisiana primary Republican presidential candidate Rick Santorum addresses supporters Photograph: Jae C. Hong/AP Rick Santorum won the Louisiana Republican presidential primary on Saturday, beating front-runner Mitt Romney in the race to challenge President Barack Obama. Although the victory gives Santorum bragging rights, it does not change the overall dynamics of the race; the former Pennsylvania senator still dramatically lags behind Romney in the hunt for delegates to the Republican's summertime nominating convention. Even so, Santorum's win underscores a pattern in the drawn-out race. The under-funded under-dog has tended to win in Bible Belt states that include Tennessee, Mississippi and Alabama. Romney a deep-pocketed, highly organised former Massachusetts governor has persistently struggled in such heavily conservative regions. Neither candidate was in the state as Louisiana Republicans weighed in. Nor was former House Speaker Newt Gingrich, who was trailing in Louisiana. Romney took a rare day off on Saturday, with no public events. Santorum spent the day campaigning in Pennsylvania and next-up Wisconsin, which votes 3 April and represents one of his last chances to beat Romney in a Midwestern state. Stand for your principles. Don't compromise. Don't sell America short," Santorum implored voters in Milwaukee, telling them that he expected their state to be "the turning point in this race." In an unmistakable jab at Romney, Santorum added: "Don't make the mistake that Republicans made in 1976. Don't nominate the moderate. When you do, we lose. It was a reference to Ronald Reagan losing the 1976 Republican nomination to incumbent President Gerald Ford, and Democrat Jimmy Carter winning the White House. Early exit polls conducted for the Associated Press and the television networks showed that Santorum's win in Louisiana was one of his strongest performances to date among conservatives, working class voters and those calling the economy their top issue. And he continued his dominance among white evangelical voters and those looking for a candidate who shares their religious beliefs. As in previous Southern states, Romney's best showing came among those voters with annual incomes above $100,000 and those who prioritised a candidate's ability to defeat President Barack Obama in November. The bad economy was the top issue for Louisiana voters. Most were gloomy about prospects for a recovery, saying they felt the economy was getting worse instead of better. While some national surveys suggest Americans are feeling optimistic about economic improvement, just one in eight Republican primary voters said they thought a recovery was under way. Santorum badly needed a rebound after a decisive Illinois loss to Romney earlier in the week that moved party stalwarts to rally around the front-runner. Many urged Santorum and Gingrich to drop out of the race. Both refused, and campaigned aggressively in Louisiana in hopes that a victory there would justify them staying in despite Republican worries that the long nomination fight could hurt the party's chances against Obama. The Democratic incumbent faces no serious primary challenge and his re-election campaign already is well under way. Romney barely campaigned in Louisiana, though his allies spent on TV ads there. Instead, Romney was looking past the results and toward the general election. "I want the vote of the people of Louisiana so we can consolidate our lead," Romney said Friday while campaigning in Shreveport. He told supporters his campaign wants to focus on "raising the money and building the team to defeat someone that needs to be out of office in 2012, and that's Barack Obama." Romney is far ahead in the delegate count and on pace to reach the necessary 1,144 delegates before the party's convention in August. After the Illinois primary 20 March, Romney had 563 delegates, according to an Associated Press tally. Santorum had 263, while Gingrich trailed with 135. Ron Paul had 50. The Louisiana exit poll found that in a hypothetical choice between just the two top contenders, Santorum's lead over Romney tops 20 percentage points, suggesting the former senator would pick up votes from Gingrich's and Paul's current supporters.