Senate Dems tie vulnerable Republicans to Trump in new ad
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The campaign arm of Senate Democrats launched its first paid advertisement Tuesday, aiming to tie vulnerable Republican incumbents and upstart Senate challengers to GOP presidential front-runner Donald TrumpDonald TrumpSeven key players for Trump on immigration Spicer: Media coverage of Trump has not been fair Kasich finds it hard to rule out 2020 MORE.

The Democratic Senatorial Campaign Committee (DSCC) ad intersperses clips of some of Trump’s incendiary remarks — with a lot of foul language bleeped out — with clips of incumbents and House members running for Senate saying they’ll support Trump if he’s the party’s nominee.

Among those who make an appearance: Sens. John McCainJohn McCainPoliticians absent from Thompson Reuters brunch McCain downplays threat of pre-emptive strike against North Korea McCain plan gains momentum amid North Korea threats MORE (Ariz.), Rob PortmanRob PortmanTrump talks big on trade, but workers need action Trump tax plan prompts GOP fears about deficit Overnight Regulation: Senators call for 'cost-effective' regs | FCC chief unveils plans to roll back net neutrality MORE (Ohio), Kelly AyotteKelly AyotteBottom Line How Gorsuch's confirmation shapes the next Supreme Court battle THE MEMO: Trump set to notch needed win with Gorsuch MORE (N.H.), Richard BurrRichard BurrTrump voter who cast ballot illegally won’t be charged Burr: US in new Cold War with Russia Senator: No signs of GOP 'slow-walking' Russia investigation MORE (N.C.), Mark KirkMark KirkThe way forward on the Iran nuclear deal under President Trump ObamaCare repeal bill would defund Planned Parenthood Leaked ObamaCare bill would defund Planned Parenthood MORE (Ill.), Pat Toomey (Pa.), Roy BluntRoy BluntUnited explains passenger removal to senators Disconnect: Trump, GOP not on same page GOP senator: There will never be full U.S.-Mexico border wall MORE (Mo.), and Ron JohnsonRon JohnsonTrump signs executive order creating new VA office Trump tax plan prompts GOP fears about deficit Lawmakers targeted as district politics shift MORE (Wis.).

Portman, Ayotte, Kirk, Toomey and Johnson all face tough reelection prospects in a presidential year, when turnout could favor Democrats. Kirk and Johnson are the most endangered of the bunch, while Portman, Ayotte and Toomey are running in hotly contested swing states.

Also in the ad are Reps. Joe Heck (Nev.), who is running for the seat being vacated by Sen. Harry ReidHarry ReidDraft House bill ignites new Yucca Mountain fight Week ahead: House to revive Yucca Mountain fight Warren builds her brand with 2020 down the road MORE (D-Nev.), and David Jolly (Fla.) and Ron DeSantis (Fla.), who are in a crowded primary running for the seat being vacated by Sen. Marco RubioMarco RubioLongtime GOP incumbent will not seek reelection Overnight Defense: Commander calls North Korea crisis 'worst' he's seen | Trump signs VA order | Dems push Trump to fill national security posts What’s with Trump’s spelling mistakes? MORE (Fla.).

“Republicans running for U.S. Senate, running with Trump,” text from the ad states.

It then cuts to Trump saying: “What the hell are we doing?”

“Exactly,” the ad concludes.

The DSCC says the ad is the first in what will be a “sustained campaign” across television, radio and social media meant to tie Republicans running for Senate to the controversial GOP front-runner.

Democrats have a good chance of taking back the Senate in 2016 after losing their majority in the last cycle.

Republicans are defending 24 seats, compared to only 10 for Democrats. If Democrats net five seats, they’ll win back the Senate.

Many Republicans up for reelection are running in states President Obama carried in 2008 or 2012.