This market resolves YES if any of the following happen:

• Biden wins reelection with exactly 270 electoral votes, including one from Nebraska's second district.

• Biden gets 269 votes in the electoral college, and doesn't have a vote from NE-2 (either because he lost it or because Nebraska changed its electoral college rules). He loses the contingent election in the House.

• Biden gets 268 electoral votes, none from NE-2. Republicans do not hold an absolute majority of state delegations in the House when the electoral votes are presented.

I will not count faithless electors in the first scenario, since it is likely that any faithless electors would have voted differently if they knew their faithless vote would bring Biden down to 269 rather than 270. If the total number of electoral votes changes, then the numbers in each option change as well to reflect whatever numbers are needed for a majority and/or a tie in the Electoral College.