There were no McCain/Kerry/Dole voters. Prove me wrong!
What about someone in Massachusetts who usually votes Republican but wanted to support the nominee who was from his home state? There were four counties in Massachusetts that swung Republican in 2008.
This actually sounds a lot like from friend Wes, who grew up, went to college and worked in Massachusetts before moving out to Oregon in the mid 1990s.
He was not a big fan of the DLC wing of the Democratic Party and Bill Clinton's support for Free Trade agreements (NAFTA), as a socially Liberal individual George W. turned him off with the excessive pandering to the evangelicals. He liked Gore on the labor & environmental position regarding free trade, plus as a techie he liked some of Gore's ideas on the tech sector, although I think he voted Nader in 2000 (Will need to ask him).
He thought the Iraq war was a huge folly, plus Kerry was from Mass.....
He was a bit torn in '08, because although personally he liked Obama, he also has a lot of respect of McCain for his "Maverick" brand, military background and experience (My friends Uncle died in 'Nam), and general rejection of the extremist religious agenda of the cultural warrior style Republicans.
2012, he liked and respected Romney, because of his Gubernatorial record in Mass, as well Obama.... I was living in NorCal at the time, so can't state definitively that he voted Romney, but suspect that was likely the case.
In 2016, he almost definitely did not vote Clinton in the GE, and although he disliked and despised much of Trump's style and substance, did support the more economic protectionist Trump messages (Minus the whole anti-immigrant Latino thing, Muslim bans and all that crap).... He was a strong Bernie backer in the primaries..... My suspicion is that he likely wrote-in Bernie rather than voting for either Trump or Clinton.