Unless he (or another candidate) wins an outright majority, the decision goes to the House of Representatives to choose among the top 3, each state voting as one. This is a built-in advantage for the "party" candidates, as it's likely that the party that controls each state's House delegation will vote for the party's nominee and not an independent.
The Senate picks the VP from the top 2, each Senator having one vote.
What if the Dhimmicraps take back the Senate? (I don't think they will, but as long as we're "what-iffing"...)
We could have a President and Vice President from different parties for teh first time since 1800.
I think the vote would come before the new Senators are sworn in.