Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. January 05, 2012 Santorum Faces Tough Battle for White House VOA News Republican presidential candidate former Pennsylvania Senator Rick Santorum reaches to greet children during a campaign stop in Brentwood, New Hampshire, January 4, 2012. Photo: AP Republican presidential candidate former Pennsylvania Senator Rick Santorum reaches to greet children during a campaign stop in Brentwood, New Hampshire, January 4, 2012. U.S. Republican presidential candidate Rick Santorum has turned his focus to New Hampshire, the location of the next nominating contest, after a surprisingly strong performance in Iowa launched him to the forefront of the race. The former Pennsylvania senator narrowly lost by eight votes to Mitt Romney in Tuesday's Iowa caucuses. Santorum's popularity was in the low single digits until recently, giving him little hope of being a top contender. He now faces a tough battle in New Hampshire, a state that favors former Massachusetts governor Romney, the Republican presidential front-runner. Santorum is also facing the challenge of developing a strong campaign outside Iowa, where he had focused his limited resources and small staff. Iowa-Mitt-Romney AP Former Massachusetts governor and Republican presidential hopeful, Mitt-Romney Romney's narrow eight-vote victory in Iowa was followed on Wednesday by an endorsement from Senator John McCain, the 2008 Republican presidential candidate. Romney has a wide lead in the New Hampshire polls, but he has struggled to get more than 25 percent support in national opinion polls. He and Santorum both had 25 percent of the votes in Iowa, the first nominating contest of the 2012 presidential election. The Republican field narrowed on Wednesday after Minnesota Congresswoman Michele Bachmann withdrew her candidacy after placing sixth among the Republicans in Iowa. The remaining six candidates are focusing the January 10 primary in New Hampshire and the following contest in South Carolina, all in hopes of being chosen to challenge President Barack Obama in the November election. Ron Paul, a Texas congressman and anti-war advocate, placed a close third in Iowa, and was finishing second behind Romney in the polls in New Hampshire. Former House speaker Newt Gingrich also remains in the race, and is using negative ads targeting Romney to attempt a comeback in New Hampshire. He blames attack ads linked to the Romney campaign for a lackluster fourth place finish in Iowa. Texas Governor Rick Perry vowed to continue his campaign on Wednesday, after saying he would reassess his presidential bid following a poor showing in Iowa. He told supporters in a tweet that he would campaign in South Carolina, ahead of that state's primary election January 21. Former U.S. Ambassador Jon Huntsman came in last with 1 percent in the Iowa polls. He is pinning his hopes on a good showing in the New Hampshire, where he has been focusing his campaign efforts. President Obama made his first campaign stop of 2012 in Ohio on Wednesday. The president faces a difficult campaign to win a second term because of the sluggish economy. Republicans hoping to win the White House have been vocal critics of the president, saying they hope to repeal health care reform and change the direction of the country. Some information for this report was provided by AP, AFP and Reuters. .