Sen. Rand Paul (R-Ky.) called for Democrats to tamp down the anti-Trump rhetoric before one of their supporters resorts to violence.

Speaking on "Fox & Friends" Wednesday, Paul said the bitter fight over Supreme Court justice Brett Kavanaugh's confirmation has made him increasingly concerned.

"There is going to be an assassination if this doesn't ratchet down. The other side needs to really calm the rhetoric down," he said.

From Hillary to Dianne: Trump Rallygoers Target Feinstein With 'Lock Her Up' Chant

Meantime, former presidential candidate Hillary Clinton declared Tuesday that Democrats "cannot be civil" with Republicans any longer.

"You cannot be civil with a political party that wants to destroy what you stand for, what you care about," Clinton said.

Paul also sounded the alarm on a Kentucky radio show, saying those on the left "have to realize they bear some responsibility if this elevates to violence."

Paul's wife, Kelley, told Breitbart News that she sleeps with a "loaded gun" at her bedside, updated her home's security system and has "deadbolts all around my house."

Paul specifically referenced Sen. Cory Booker (D-N.J.), who called on his supporters to "get up in the face of congresspeople." He said he does not believe Booker wanted to incite violence, but "there are a lot of unstable people out there" who may resort to violence against Republicans.

He emphasized that a Bernie Sanders-supporting gunman who attacked Republican lawmakers on a Virginia baseball field in 2017 had a list of lawmakers he wanted to shoot and was yelling "this is for health care."

Paul was at the baseball practice when the gunman shot several people, severely wounding Rep. Steve Scalise, but was not hurt.

Watch the full interview above, including on Nikki Haley's resignation and the suspected murder of a Saudi journalist in Turkey.

Maxine Waters Blasts Trump for Criticizing Left-Wing Activists: He Is 'Poster Boy' for 'Mob' Protesters

'People Don't Realize the Risk': Gov. Scott Warns Residents Who Ignored Hurricane Evacuation Orders

Gutfeld: Left-Wing Mobs of 'Angry Losers' Attack Civilians in Oregon