Democrats hold a 10-point lead over the GOP on the generic House ballot, according to a new poll from NBC News and The Wall Street Journal.

The poll, released Thursday, found that 50 percent of respondents said they want Democrats to take control of Congress, compared to the 40 percent who said they want Republicans to maintain control.

The Democrats' lead is 3 points higher than in April, when the same poll found 47 percent of voters said they would prefer a Democrat-controlled Congress. The percentage of those in favor of GOP leadership held at 40 percent.

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The CBS News/YouGov Battleground Tracker poll released Sunday found that control of the House was a toss-up between the two parties.

Republicans fear they could lose control of Congress in the midterm elections after maintaining a hold on both chambers during President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE’s first two years of office.

Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ky.) also canceled the Senate’s August recess, preventing vulnerable red-state Democrats from campaigning ahead of the 2018 midterm elections.

The NBC News/WSJ poll conducted phone interviews with 900 registered voters from June 1-4 and has a margin of error of 3.3 percentage points.