Karl Rove said Monday that Democrats must be wary of the fact that 35 of their freshmen House members are from districts that supported President Trump in 2016.

Sandra Smith asked Rove if the dynamic is similar to what Republicans experienced in 2011 with the conservative Tea Party movement

Rove, a former White House senior adviser, said Democrats have a bigger problem than Republicans in that regard, because the Tea Party was a new phenomenon in 2011, while there are already many progressive Democrats.

He said that Democrats were given back control of the House not by the left-wing of their party, but by moderates in key districts won by Trump or otherwise historically Republican-leaning.

He said that is especially true in the Philadelphia and Atlanta suburbs.

North of Philadelphia, Rep. Susan Wild (D) took over a Lehigh Valley seat held for more than two decades by both Charlie Dent (R) and current U.S. Sen. Pat Toomey (R).

Sen. Toomey on Rejecting Trump's Border Emergency: 'I Support Wall Funding,' But Not This Way

'He Betrayed Us': Mother of Slain Officer Blasts CA Gov's Death Penalty Moratorium

In 2018, Philadelphia's western suburbs were won by Reps. Chrissy Houlahan (D) and Mary Gay Scanlon (D) in areas previously held by Republicans Pat Meehan and Ryan Costello.

In Georgia, a similar phenomenon unseated Rep. Karen Handel and others. Trump won both Georgia and Pennsylvania in 2016.

"The people who put Democrats in power [were] people in centrist districts," he said, adding that of the 35 new members that fit that billing, Democrats can only afford to lose 18 next year before the GOP regains control of the House.

Watch more above.

Dershowitz: Rep. Tlaib's Claims of Islamophobia by Dems and GOP 'Designed to Stifle Debate'

'Scandalous: The Trial of William Kennedy Smith' Continues: The Star Witness Is Called