House Republican leaders are projecting confidence that they will keep control of the U.S. House. More more races are being decided their way, but Democrats insist they still see a path to the House majority.

Democrats’ path to retake control of the House of Representatives got slimmer as more races were called on Wednesday and Thursday. The party needs a net gain of four seats in order to win back the majority in Congress’ lower chamber.

Two House Democrats have been ousted by their Republican challengers in Pennsylvania, bolstering the GOP’s chances of defending its slim majority as it inches closer to the 218-seat threshold. Republican candidate Ryan Mackenzie defeated three-term incumbent Rep.

Republicans knocked off Democrats in two perennially contested U.S. House seats in eastern Pennsylvania while U.S. Rep. Scott Perry, one of the hardest right members of the chamber, survived a challenge in a southern Pennsylvania district with more moderate politics.

Three U.S. House seats in Nevada will remain under Democratic control after a sweeping win Thursday for the incumbents, while the state's tight Senate race was still too early to call. The Associated Press has declared Democratic Reps.