(CNN) – Mitt Romney’s making another endorsement, and this time it’s in a crucial Senate race in his own backyard. CNN has learned that next week the 2012 GOP presidential nominee will endorse Scott Brown, the frontrunner among the Republican candidates hoping to challenge Democratic Sen. Jeanne Shaheen of New Hampshire this November. [twitter-follow screen_name=’politicalticker’][twitter-follow … Continue reading First on CNN: Romney to endorse Scott Brown