The conservative Judicial Crisis Network is taking aim at four Democratic senators ahead of next week's showdown over President Trump's Supreme Court nominee.

The group launched a $1 million TV and digital ad buy on Thursday, starting with a nationwide TV ad urging senators to support Judge Neil Gorsuch for the nation's highest court.

Bennet won reelection last year but is under heavy pressure to support Gorsuch, whom he helped introduce during his committee hearing because of his home-state ties.

The ad targeting Bennet plays up Gorsuch's ties to the state, urging the Democratic senator to support a "son of Colorado."

"Senator Bennet can remind the nation what leadership looks like," the ads narrator says. "Senator Bennet – it’s time, oppose the liberal filibuster."

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Carrie Severino, the chief counsel for the Judicial Crisis Network, argued that it's time for Schumer to end "his campaign for endless gridlock."

"It’s time for Sen. Schumer to heed his own words, end his gridlock campaign and honor the tradition of the Senate by giving Judge Neil Gorsuch a fair up or down vote,” she said in a statement.