I'm a Goldwaterite on abortion and economics, but Hatfield's foreign policy made vastly more sense and I think Hatfield was much more of an independent dealer in the political arena. Here's how I see an election going down (green = Hatfield, grey = Goldwater):

An extremely narrow Hatfield win, 277-261, built mostly on the back of the South and the Rust Belt. Bear in mind that this map is for an election between them today; I'm not sure Goldwater's stand for state's rights would be as appealing to the South today as in 1964, whereas Hatfield's position on abortion is probably moreso.