The alliance between likely Republican presidential candidate Michele Bachmann and possible candidate Sarah Palin appears to be fraying.

And it's being fueled largely by Bachmann's new campaign manager, Ed Rollins. On Tuesday, veteran Republican strategist Rollins took some shots at Palin. “Sarah has not been serious over the last couple of years,” he said in an interview on Fox News Radio.

“She got the vice-presidential thing handed to her. She didn’t go to work in the sense of trying to gain more substance. She gave up her governorship.”