Recent historical precedents for a Scott Brown win are obiously few, since the Bay State hasn't elected a Republican to the Senate since the Eisenhower administration. In an excellent piece, Steve Kornacki diagrams the victory strategies of Massachusetts's three most recent GOP statewide office-holders, all of them governors. Unfortunately, none are strict analogues for Brown's situation. Republican governors William Weld and Paul Celluci, who ran Massachusetts in the 1990s, faced Democratic opponents that were odious to progressives (Weld's opponent John Silber) and unions (Celluci's opponent Harshbarger) on policy grounds. Coakley may have run an awful campaign but, aside from the...