Donald Trump is about to get hit by a barrage of attack ads

Groups opposing Donald Trump's candidacy are ramping up their efforts to defeat him ahead of the February 20 primary in South Carolina.

On Friday, two of those groups announced that they would launch major television-commercial campaigns against Trump, the Republican presidential front-runner.

Right to Rise USA, the big-money super PAC backing former Florida Gov. Jeb Bush (R), released an ad titled "Iceberg."

In the ad, an ice sculpture of Trump is depicted melting as a narrator castigated the real-estate mogul for deviating from the conservative cause. The narrator also suggested that Trump would lose a general election to former Secretary of State Hillary Clinton.

Mike Murphy, the GOP consultant who runs the pro-Bush super PAC, wrote on Twitter that the ad would start running nationally Friday on Fox News.

"Coming soon to SC and more places," he added.

View the ad below:

View the Club for Growth's new ad below:

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