According to an interview with the Boston Herald's Matt Stout, Senate President Therese Murray could be running for Governor. According to Stout:
Murray — facing a March 2015 term limit as president — said she won’t decide until February or March whether she’ll seek re-election. But while she was quick to say she will finish her two-year term, she played coy when asked if she’d run for governor, giving a “no comment.”