Answers · Midterms

How many seats do you need for a majority in the House?

By Mert Yerekapan, maker of Midterms 2026 · Updated 2026-10-28

You need 218 seats. The House has 435 voting members, and 218 is the smallest number that's more than half. In practice the bar can move a little: when seats sit empty because of a resignation or death, a majority of the members actually serving can be fewer than 218.

Why 218 matters so much

Holding 218 seats means your party picks the Speaker, runs every committee, and controls what reaches the floor for a vote. The minority can make noise, but it can't schedule anything.

That's also why thin majorities are fragile. If a party has 220 seats, losing just a few of its own members on a vote is enough to sink a bill. A handful of holdouts suddenly has a lot of power, and I think this is the most interesting part of how the House works.

Some numbers worth knowing

435 voting members, a number fixed by law since 1929
6 non-voting delegates (DC, Puerto Rico and the territories), who don't count toward the majority
2 years, so every single seat is up in every election, midterms included
To pick a Speaker, a candidate needs a majority of the members who vote for a person by name, which is why Speaker votes can drag on when the majority is narrow

What if nobody has 218?

With only two big parties, one of them almost always gets there. But imagine a third party winning even 20 or 30 seats. Then neither big party might reach 218 on its own, and the smaller party becomes the one everyone has to deal with.

That scenario is the win condition I liked most when I made Midterms 2026, a free strategy game for iPhone. You build a new party and fight for all 435 seats. You can win outright with 218, or end up as the kingmaker that neither party can govern without. A progress bar toward 218 sits at the top of the screen the whole game, and it's a good way to feel how far 218 really is.

The short version

218 of 435 seats is a House majority
The majority party controls the Speaker, committees and the floor
When no party reaches 218, a small bloc can hold the balance of power