Tim Cahill and Charlie Baker hit the airwaves with new ads in advance of Labor Day, with Baker touting his ability to fix things that are broken, and Cahill talking about his success with the new school building system. Both hit on the pledge to work on job creation. Governor Patrick is not yet on the airwaves, but hit on the impressive job creation numbers posted in Massachusetts for the last reporting period. Those numbers created quite a twitter war between old Romney hand Eric Fehrnstrom and supporters of Governor Patrick. The battle begins to heat, with plenty of media money to go around.