President Hillary Clinton (D-NY) / Vice President Tim Kaine (D-VA) ✓
Senator Liz Cheney (R-WY) / Senator Marco Rubio (R-FL)
Assuming Trump completely bows out of politics for some reason, Cheney gets nominated because geopolitical events reawaken the neocons,
and she makes an effort to appease grassroots conservatives, it's not a total wipeout. It's not like a majority of Republicans are allergic to her wing of the party, they just want their way on domestic issues "electability" be damned. What matters here is how much of a seat at the table Cheney is willing to give the grassroots, which she'd have to to get nominated in the first place.