up by strong winds on a Long Island soccer field. The bounce houses became airborne with several children still inside them. They were sent flying a dozen feet across the field, then continued rolling upon landing, injuring more people. Three bounce houses were set up as part of a carnival for a soccer tournament for the Oceanside bustible," said Terry Madonna, a professor and pollster at Franklin & Marshall College in Pennsylvania. "He's hard-charging and high-octane. ... But he's very direct. You don't have to worry about double-speak with him. He is what he is."  Santorum's conservatism is deeply rooted in his faith.  He grew up in a devout Catholic family in Butler, Pa., the son of an Italian immigrant father who was a psychologist and a mother who was a nurse.  "You had to be on your deathbed not to go to Mass," said his younger brother, Dan.  Butler was a mostly blue-collar town with lots of ethnic churches, Rick Santorum recalled.  "Those characteristics of hard work, loyalty, family and church were very much drummed into me," he said.  Dan Santorum said his brother had a deep competitive streak, evident when he played baseball, chess and board games like Risk. He hated losing.  "He still does," said the younger Santorum. "But he's not a sore loser. He's not a quitter. That's served him well in politics."  During college at Penn State, Rick Santorum drifted a bit from his faith before meeting his wife, Karen Garver Santorum.  "The beautiful thing about it is we grew in our faith together," Santorum said. "We wanted that to be the grounding for our marriage."  That faith has been tested. He and his wife have seven children. Another child, Gabriel Michael, died in 1996, two hours after an emergency delivery.  The couple slept with the bundled dead baby's body in their hospital room that night, wanting to keep Gabriel in their arms until the burial. They took Gabriel's body home so their other children could see and hold the baby before burying him, according to Karen Garver Santorum's book, "Letters to Gabriel."  "Daddy and I wanted to hold you for as long as we possibly could," she wrote.  The couple's youngest child, 3-year-old Isabella, was born in 2008 with trisomy 18, a genetic disorder. Fewer than 10 percent of those diagnosed with the condition live to their first birthday.  Santorum says his daughter's illness cut both ways as he debated whether to run: He wanted to spend as much time with her as possible, but he also felt the need to fight for "children like Bella and for the dignity of human life."  "These children are simply denied care because they don't have long life expectancies," he told the AP. "They're not seen as useful economic units."  Santorum has doggedly laid the groundwork for what he hopes is his comeback campaign. He's been a frequent visitor to New Hampshire, Iowa and South Carolina, states that vote early in the nominating season. His back-to-better-days campaign slogan: "Fighting to make America America again."  But his candidacy will have to overcome hurdles, including low name recognition and the lack of a strong fund-raising organization. He also has to hope supporters aren't scared off by his 18-point loss in the 2006 Senate race.  Santorum was elected to the House in 1990 at age 32. He shot to prominence as one of the "Gang of Seven" freshman Republicans who bucked their leadership and helped to expose fellow lawmakers who had abus