Former Secretary Hillary Clinton (D-NY)/Senator Tim Kaine (D-VA) 275 EVs
Senator Jeff Sessions (R-AL)/Governor Mike Pence (R-IN) 263 EVs
Here are my thoughts. Hillary Clinton would have become the 45th President of the United States. The GOP ditching Trump would cause a moment of panic since Pence wouldn't assume the top of the ticket. Many Trump voters and supporters would consider him the de facto heir to the Trump throne. Anyways, Sessions would take a more hard line approach on immigration causing Hillary to lock up support in New Mexico, Colorado, Nevada, and Arizona becomes a pure tossup. Hillary wins Arizona because of dissatisfied Hispanics. Now up to the rust belt. Sessions will have an African-American problem and it will guarantee him a loss in Michigan since Detroit will turn out heavily for Clinton even more. He will still win Pennsylvania and Wisconsin because the white working class will still vote for him but it will be decided even more narrowly. North Carolina will flip to Clinton due to Sessions' black voter problem. Maine CD-2 won't go for Sessions because they would have only gone for Trump. To summarize, Hillary wins because Sessions will appear to moderates as more divisive than Trump and she would win off the backs of minorities.
Sessions would win Pennsylvania and Wisconsin but no Arizona or North Carolina?