White House press secretary Sarah Huckabee Sarah Elizabeth SandersSarah Sanders on Trump's reported war dead criticism: 'Those comments didn't happen' Sarah Sanders memoir reportedly says Trump joked she should hook up with Kim Jong Un McEnany stamps her brand on White House press operation MORE Sanders said Tuesday that she doesn't believe internal polling showing President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE trailing former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE in a hypothetical 2020 race.

"I think the polling got it completely wrong in 2016, I don't think it's right now," Sanders told reporters.

"The president's got a great story and we feel very comfortable about where we are," she added, touting the president's work on trade deals, the economy and military.

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"I'm not worried about polling," she said when pressed about the internal polls. "The president has an incredible record, he's had tremendous success and we feel very comfortable about where we are as an administration."

The New York Times reported Monday that Trump told aides to deny that internal polls showed him lagging behind Biden in key states. When the polling was leaked, Trump told aides to tell reporters that other data showed him doing better, according to the newspaper.

A Trump campaign official denied this, telling The Hill in a Tuesday statement that “no one has ever asked us to lie about anything."

Polls released last week found that Trump was trailing Biden, the Democratic front-runner, in states including Texas, which Democrats haven't won since 1976, and Michigan, which Trump narrowly won in 2016.

Two dozen candidates are vying for the 2020 Democratic nomination.