Conservatives hate Baker and they probably at least have respect for Bernie Sanders for his honesty of his views where as you look at a Republican Governor who right after he was sworn in as governor said "screw you to the Republican Party"
This is what the map would probably look like
So the republicans said "screw you, you're too left wing" then voted for an even more left wing candidate?
Nope. They just don't show up to vote on Election Day, the same way many of them didn't in 2016, 2012, and 2008
This myth is my biggest political pet peeve. Its not that republicans didn't show up on election day, is that moderates and independents didn't vote as much for Romney and McCain as they did for Obama. Solid republicans turned out strongly for each.