BOSTON (CBS) – The Suffolk University Political Research Center has determined that the key swing states of Florida, Virginia and North Carolina are solid enough in the Mitt Romney column that they’re not even going to poll there any more.

WBZ NewsRadio 1030′s Carl Stevens reports

“It looks really challenging and people who are in the research business know than when a candidate who’s an incumbent is stuck at 47-percent, it’s very difficult to get to 50,” David Paleologos, the center’s director, told WBZ NewsRadio 1030 Thursday.

They’re now focusing on closer states like Nevada, Ohio, New Hampshire, Iowa and Michigan.

“We’re going to go into those other states first and then if the Virginia’s and the Florida’s become more competitive, we’ll certainly return there if we can,” Paleologos said.