There are 50 elections. Plus DC
If one state, say NJ, cancels their election ... fails to hold it ... the NJ legislature appoints electors. If they fail to do so, NJ has 0 votes for the electoral college.
If nobody gets a majority on December 17th, the election goes to the U.S. House. NJ would cast it’s one vote for the Dem. Likely
If NJ doesn’t cast its 14 electoral votes, 263 would win.
Majority of votes cast.