Pelosi warns Trump 'ain't no light at the end of the tunnel' should election be decided in House | Fox News - "Contingent elections are rare and have only occurred three times in history, all in the 1800s"
It's a vote for every state's House delegation has one vote. Here is its current partisan composition:
Alabama: R 6 D 1, Alaska: R 1, Arizona: D 5 R 4, Arkansas: R 4, California: D 45 R 7 X 1, Colorado: D 4 R 3, Connecticut: D 5, Delaware: D 1, Florida: R 14 D 13, Georgia: R 9 D 5, Hawaii: D 2, Idaho: R 2, Illinois: D 13 R 5, Indiana: R 7 D 2, Iowa: D 3 R 1, Kansas: R 3 D 1, Kentucky: R 5 D 1, Louisiana: R 5 D 1, Maine: D 2, Maryland: D 7 R 1, Massachusetts: D 9, Michigan: D 7 R 6 L 1, Minnesota: D 5 R 3, Mississippi: R 3 D 1, Missouri: R 6 D 2, Montana: R 1, Nebraska: R 3, Nevada: D 3 R 1, New Hampshire: D 2, New Jersey: D 10 R 2, New Mexico: D 3, New York: D 21 R 6, North Carolina: R 9 D 3 X 1, North Dakota: R 1, Ohio: R 12 D 4, Oklahoma: R 4 D 1, Oregon: D 4 R 1, Pennsylvania: D 9 R 9, Rhode Island: D 2, South Carolina: R 5 D 2, South Dakota: R 1, Tennessee: R 7 D 2, Texas: R 22 D 13 X 1, Utah: R 3 D 1, Vermont: D 1, Virginia: D 7 R 4, Washington: D 7 R 3, West Virginia: R 3, Wisconsin: R 5 D 3, Wyoming: R 1
I'm not going to guess who is likely to win in November, so I'll use that as a reference. D = Democratic, R = Republican, L = Libertarian, X = vacant
The number of delegations with a majority of each party is R 26, D 23, (tied) 1.
If the Democrats get some more seats in the upcoming election, they may also be successful in getting majorities in more delegations. So the House may be a tossup.