How much has Gov. Jan Brewer's stock risen since she signed SB 1070? Public Policy Polling now includes Brewer in hypothetical match-ups against President Barack Obama:

With his approval numbers hitting new lows it's no surprise that Barack Obama's numbers in our monthly look ahead to the 2012 Presidential race are their worst ever this month. He trails Mitt Romney 46-43, Mike Huckabee 47-45, Newt Gingrich 46-45, and is even tied with Sarah Palin at 46. The only person tested he leads is Jan Brewer, who doesn't have particularly high name recognition on the national level at this point.

It's not that any of the Republican candidates are particularly well liked. Only Huckabee has positive favorability numbers at 37/28. Romney's at 32/33, Gingrich at 32/42, Palin at 37/52, and Brewer at 17/20. But with a majority of Americans now disapproving of Obama it's no surprise that a large chunk of them would replace him as President if they had that choice today.

There are two things driving these strong poll numbers for the Republican candidates. The first is a lead with independents in every match up. Romney leads 48-35 with them, Gingrich is up 50-39, Huckabee has a 46-40 advantage, Palin's up 47-42, and even Brewer has a 38-37 edge.

Read the whole thing here.