U.S. adults view House Speaker Nancy Pelosi (D-Calif.) more negatively than House Minority Leader John BoehnerJohn Andrew BoehnerZeal, this time from the center Juan Williams: The GOP's deal with the devil Hillicon Valley: Trump hits China with massive tech tariffs | Facebook meets with GOP leaders over bias allegations | Judge sends Manafort to jail ahead of trial | AT&T completes Time Warner purchase MORE (R-Ohio), a poll found Wednesday.

A new NBC/Wall Street Journal poll found that half of Americans had no opinion of the top House Republican or were unfamiliar with who he is, after a month of efforts by President Obama and other Democrats to elevate BoehnerJohn Andrew BoehnerZeal, this time from the center Juan Williams: The GOP's deal with the devil Hillicon Valley: Trump hits China with massive tech tariffs | Facebook meets with GOP leaders over bias allegations | Judge sends Manafort to jail ahead of trial | AT&T completes Time Warner purchase MORE.

Fifty percent of American adults said they didn't know Boehner or were unsure of what they thought of him, in the new NBC/Wall Street Journal poll released Wednesday. Of those who knew of Boehner, a net 14 percent had a favorable opinion, while 17 percent had a negative opinion of the GOP leader.

On the Democratic side of the ledger, Pelosi has an approval rating that skews negative.

While 22 percent of Americans said they had a positive impression of Pelosi, a net 50 percent had a negative opinion of the House's top Democrat.

The poll calls into question whether the White House's effort to cast Boehner as the chief opponent to the administration's agenda in the House has been successful.

"Americans are demanding that Congress work together to help create jobs and cut spending. That's where our focus should be," said Boehner's communications director, Kevin Smith. "For the sake of the country, hopefully this dawns on the White House at some point."

The poll also found that Americans were less familiar with the top Senate Republican, Minority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellWarren on family separation policy: Trump is ‘taking America to a dark and ugly place’ Senate GOP tries to defuse Trump border crisis Schumer rejects GOP proposal to address border crisis MORE (Ky.), while having a more negative opinion about Senate Majority Leader Harry ReidHarry Mason ReidAmendments fuel resentments within Senate GOP Donald Trump is delivering on his promises and voters are noticing Danny Tarkanian wins Nevada GOP congressional primary MORE (D-Nev.).

Eighteen percent said they had an unfavorable opinion of McConnell, versus 12 percent who had a positive opinion. Reid has a 32 percent unfavorable rating in the poll, versus 12 percent who have a positive opinion.

The poll, conducted Sept. 22-25, has a 3.1 percent margin of error.

Updated 7:41 a.m.