A sports betting website claims Republicans are favored to keep a majority in the House after the 2018 midterm elections.

According to oddsmakers at MyBookie, one would have to bet $140 to win $100 if Republicans kept a majority in the House. But for Democrats, one would need to bet $100 to win $100 if Democrats gained a majority.

For Democrats to win the majority in the House, they would need to win at least 23 seats held by Republicans. A total of 218 seats are needed by one party to obtain a majority.

Additionally, the oddsmakers at MyBookie predict that Republicans will gain a few more seats in the Senate, including those in North Dakota, Missouri, and Florida.

Races in Missouri and Florida are tight between Republicans and Democrats. There is a wider margin in North Dakota between candidates, where Republican Rep. Kevin Cramer has a 14-point lead over incumbent Democrat Sen. Heidi Heitkamp, according to the RealClearPolitics poll average.

The 2018 midterm elections will be held on Nov. 6. Despite MyBookie's odds, most expect that Democrats will win a majority in the House.