assuming the Senate does not change hands.
Unless I’m quite confused, the Congress that would decide an EC tie is the lame duck Congress that does not include the new members.
Also, voting is by majority of state delegations, which means it is theoretically quite possible for the party with a majority of the House to not be able to elect its candidate as President. Don’t think it applies this year, though. Or very often, since Democratic reps are concentrated in the larger states.