The competition for control of the House of Representatives is heating up, with both parties striving for power and several crucial races still undecided.

As of Saturday, Republicans held 212 seats while Democrats had 200. To achieve a majority, a party must reach 218 seats.

The Democratic path to a House majority is becoming increasingly difficult, as they must win nearly all of the most contested races to take control.

Many undecided seats are located in the western U.S. and in swing districts, including Arizona, Washington, Oregon, California, Colorado, Nebraska, Iowa, Louisiana, Ohio, Maryland, New York, Maine, and Alaska.