Sen. Jon Tester, D-Mont., is an agent of “gridlock” who has helped delay the nomination of Judge Neil Gorsuch to the Supreme Court, according to the Judicial Crisis Network.

The group is targeting Tester, a Democrat who hails from a predominantly red state, with a new 30-second ad. Other ads focusing on Senators Claire McCaskill of Missouri and Joe Donnelly of Indiana are still to come.

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