The last time there was a vacancy in Massachusetts, when Ted the Swimmer died, the Democrats changed the rules so that the Republican governor could not pick the temporary replacement.
http://www.freerepublic.com/focus/news/2337549/posts
http://www.freerepublic.com/focus/news/2320739/posts
https://en.wikipedia.org/wiki/Paul_G._Kirk#U.S._Senate
> In August 2009, Senator Ted Kennedy died, leaving a vacancy in the Massachusetts Senate delegation. Five years earlier in 2004, the Massachusetts General Court had withdrawn the authority of the governor to fill a U.S. Senate vacancy by appointment, to prevent the then-Governor Mitt Romney, a Republican, from appointing a fellow Republican to fill the remainder of Democrat John Kerry’s Senate term, if Kerry were to win the 2004 presidential election. The legislation was enacted over Romney’s veto.
The woman-killing drunken whale wanted *that* altered (maybe temporarily) to permit racist Deval Patrick to appoint a temporary (Demwit) replacement during Obamacare furore on the Hill, then move on to the special election.