There are all sorts of things I don't get here. Like how on earth Georgia will go for a northeastern liberal, or how Florida will go for any Democrat at all in 1980 after Mariel. Or why Kennedy carries Kentucky, where the Kennedys have never been very popular (Nixon won it easily in 1960, and Jimmy Carter's 67-23 victory over EMK in the OTL 1980 Democratic primary https://en.wikipedia.org/wiki/Democratic_Party_presidential_primaries,_1980 wasn't due *solely* to Chappaquiddick.)
Who is the Vice-President? If it's a Southerner, that'd could have swayed a lot of states to Ted.