A generic Republican candidate now holds a four-point lead over President Obama in a hypothetical 2012 election matchup. It's a fifth week in a row that the GOP candidate has been ahead and the widest gap between the candidates to date. The latest Rasmussen Reports national telephone survey finds a generic Republican candidate earns support from 46% of Likely U.S. Voters, while the president picks up 42% of the vote. Three percent (3%) prefer some other candidate, and nine percent (9%) are undecided. (To see survey question wording, click here.)