In the ongoing consideration of unfinished Congressional races, Maine's 2nd District is perhaps the most interesting one that doesn't involve mail-ins, provisionals, or recounts:
https://www.pressherald.com/2018/10/22/poliquin-indicates-he-might-challenge-election-results-if-he-doesnt-win/Poliquin is winning, but has below 50% of the vote. Unlike Mississippi's special election, which will get a run-off, or Georgia's governor's race which may, Maine will be decided by Ranked Choice Voting, in which first the lowest (4th place) candidate's voters' ballots will be redistributed among the 3 remaining candidates and then, if there is still no greater than 50% leaders, the 3rd place candidate's ballots will be redistributed between Poliquin (GOP) and Golden (Dem).
The 3rd and 4th place finishers, when asked, indicated that they would prefer the other or, failing that, Golden. If their voters heed the recommendations, then Golden could well pass Poliguin and land in first place, winning the seat.
But not so fast!!!
Golden and his less successful competitors all indicated, back in October, that they would accept the results of the election, even if it came down to RCV. Poliquin refused to commit to it and might well sue to overturn the public's twice-approved new (since 2016) method.
After all, says Poliquin, he's the best prepared candidate, so why would he say otherwise?