Sen. Lindsey Graham vowed Sunday to hit the campaign trail before the midterm elections to oppose sitting Democrats in states that Trump won because of their opposition to Supreme Court Justice Brett Kavanaugh.

“All I can say is this is going to the streets at the ballot box,” Graham, R-S.C., said during an interview on "Fox News Sunday." “I've never campaigned against a colleague in my life. That's about to change. I'm going to go throughout this country and let people in these purple states, red states, where Trump won know what I thought, know what I think about this process.”

Graham has criticized Democrats for how they treated Kavanaugh, who was confirmed to Supreme Court on Saturday after a bitter confirmation battle during which the judge fought off allegations of sexual assault.

Democrats expect their base to be energized over the Kavanaugh nomination as they seek to take control of Congress in November, but Graham suggested Republicans could use the issue to their benefit.

[Opinion: Brett Kavanaugh’s confirmation to the Supreme Court will radicalize the Democratic Party]

“I hope everyone running for the House in these purple districts will be asked the question, 'Do you support impeaching Judge Kavanaugh based on five allegations, none of which could be corroborated? Do you want an outcome so badly that you would basically turn the law upside down?'" he said.

Graham has transformed himself from a critic of some of Trump’s policies, and an opponent during the 2016 presidential election, to one of the president’s closest allies. In recent weeks he became one of the fiercest GOP defenders of Kavanaugh and promised a "full-scale" inquiry into Democrats on the Senate Judiciary Committee to find out whether there was any wrongdoing in how they managed the sexual misconduct allegation Christine Blasey Ford leveled against Kavanaugh.

He celebrated his new standing on Sunday, and took credit for helping Kavanaugh win confirmation.

“I am happy that those who try to destroy his life fell short,” he said. “I'm glad that those who try to overturn the rule of law and replace it with mob rule lost. I've never been more pissed in my life. This is character assassination. This is wanting power too much. To the extent that I came to the aid of this good man and help defeat this debacle, I am happy as a clam.”

