New polling data suggest, presenting challenges for the Republican nominee at a moment when he is trying to rebound from a week of bad headlines by refocusing on federal spending. President Obama has opened lead in Iowa, Colorado and Wisconsin. The new poll results are significant in part because the Romney campaign views the three states as steppingstones to an Electoral College majority, given Mr. Romney's slippage in polls of two of the largest battlegrounds, Ohio and Virginia. Read more.