Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE's campaign manager, Kellyanne Conway, on Tuesday blasted the media for being silent on the latest polls, which show a narrowing gap between Trump and Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE.

"Three weeks ago every headline & pundit screamed 'Look at the polls! Race is over!' #Polls now tightening; media chatter is poll-free," Conway tweeted.

@KellyannePolls "Look at the polls! Race is still over!" That better? — Chris O'Brien (@obrien) August 30, 2016

ADVERTISEMENT

Several recent national polls have shown Trump, the Republican presidential nominee, gaining ground on Clinton, the Democratic nominee. The NBC News/SurveyMonkey Weekly Election Tracking Poll released Tuesday, for example, found Clinton beating Trump by 6 points, 48 percent to 42 percent.

Clinton was leading Trump by 8 points in that poll last week.

Clinton now leads Trump by 5 points nationally, according to the RealClearPolitics average of polls.

Conway said last week that a large portion of Trump's support base is "undercover" and hard to measure through mainstream polling.

“The hidden Trump vote in this country is a very significant proposition,” she said.

"Donald Trump performs consistently better in online polling, where a human being is not talking to another human being about what he or she may do in elections."