It's not as if Massachusetts has never had a Republican governor. Just in the past quarter century, both William Weld and Mitt Romney have held the job. But it's still not a place where you really expect a Republican to win. This year, though, it seems as if there is almost nowhere Democrats are safe. The final Boston Herald poll prior to today's vote shows Republican Charlie Baker with a 46-42 lead over Democrat Martha Coakley, who was the Democratic Party establishment's choice.