Sarah Formato, a 31-year-old stay-at-home mom, poses with her children Finn (C), 3, dressed in a Spiderman costume and Hollyn, 5, at her home in Aurora, Colorado July 30, 2012. The president's fierce struggle for re-election hinges in part on women such as Formato, who voted for Barack Obama in 2008 and whose support has turned lukewarm. According to a national Reuters/Ipsos poll of 25- to 45-year-olds, mothers tend to differ from women without children on issues ranging from the economy, taxes and military spending to healthcare and birth control -- as well as on presidential candidates. Childless working women favor Obama over Mitt Romney, the presumed Republican nominee, by a striking 20 points, 46 percent to 26 percent. Working mothers were less likely to favor the president, by 42 percent to 34 percent. Stay-at-home mothers such as Formato, along with unemployed mothers, gave the president only a 5-point margin: 37 percent to 32 percent. Picture taken July 30, 2012.