Regardless of your political affiliation, it's hard not to agree that the 2016 presidential election proved to be a chaotic turning point for American politics.
It was also a time that saw a great deal of friction within the Republican party as some prominent Republicans such as George H.W. Bush and John McCain made their aversions to President Donald Trump very clear. Although McCain chose to support neither Trump nor Clinton in 2016, both Bush and George W. Bush went as far as to cross the aisle and vote for Clinton.
And McCain's widow has formally announced that she plans to make a similar decision.