Sen. Lindsey Graham campaigns for Mike Braun in Mishawaka

MISHAWAKA, Ind. — the Republican Party is continuing to send big names to the Hoosier state, to stump for GOP U.S. Senate nominee Mike Braun. South Carolina Senator Lindsey Graham joined Braun at a campaign stop at U.S. Congresswoman Jackie Walorski’s Mishawaka office Thursday morning.

“I’m here because I know mike Braun would cut your taxes, he’s strong on national security,” said Sen. Graham.

Indiana’s U.S. Senate election is the race to watch in the 2018 midterms. Considering it could determine the momentum the party picks up heading into 2020, Republicans aren’t letting up the pressure here.

“I think means if we don’t win this state, we’re going to have trouble elsewhere,” said Braun. “We’re seeing what you saw out there, standing room only across the state. It’s not just here, it’s everywhere and that’s why we’re going to win it.”

Sen. Graham told voters to put pressure on Democratic incumbent Joe Donnelly for voting against conservative interests. He called out Sen. Donnelly for voting against the GOP tax plan and opposing the Supreme Court nomination of Justice Brett Kavanaugh.

“[Braun] understands that Kavanagh was a highly qualified man and he would not have aided and abetted in the destruction of Kavanaugh,” said Sen. Graham.

Healthcare was another big talking point for the two Republicans. Braun told the crowd he will work to protect patients with preexisting conditions. But Indiana Democrats say he can’t be trusted.

"With only days left until election day, Hoosiers have now seen Rep. Braun lie about his support for dismantling coverage protections for Hoosiers with pre-existing conditions, as well as nearly every other aspect of his record," said Michael Feldman, spokesman for the Indiana Democratic Party, in a statement to ABC 57 News.