Ohio Senate candidate Josh Mandel is confident he will win Tuesday's Republican primary and take Democrat Sen. Tim Ryan’s seat in November despite an uphill battle against Trump-backed opponent J.D. Vance, who is leading the polls.

Mandel said on "America’s Newsroom" Monday that his campaign strategy is something no other Ohio Senate candidate has ever done, and it will take him to victory.

"Rather than running the campaign through traditional Republican Party groups, we’ve actually run our campaign through churches," he told co-hosts Dana Perino and Bill Hemmer.

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"We’ve got this army of Christian warriors throughout the state who are going to come out in droves and propel us to victory," he said. 

Mandel said Sen. Ted Cruz, who offered his endorsement, and Gen. Michael Flynn accompanied him to campaign events at churches around the state.

Mandel dismissed concerns about his polling numbers being lower than J.D. Vance, citing his numerous fights against former moderate Republican Gov. John Kasich and his ongoing dedication to his state.

"The people like me who’ve lived in Ohio our entire life – except for when I was gone in the Marine Corps in Iraq – they’re going to vote for me because they know I’m born and bred here," he said. 

"They know I’m a proven conservative fighter."

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Mandel did not, however, secure an endorsement from former President Trump, who won Ohio in both the 2016 and 2020 presidential elections.

Mandel said he doesn’t believe the lack of a Trump endorsement will hurt his campaign, again expressing his confidence in coming out of the primary with the win. 

"When we win tomorrow, we’re going to stand up, and we’re going to welcome every corner of the Republican Party and every corner of the state of Ohio to join our campaign," he said.

COLUMBUS, OH - MARCH 18: Mike Gibbons (L) and Josh Mandel exchange heated arguments at the FreedomWorks Forum for Ohio's Republican Senate Candidates on March 18, 2022 in Columbus, Ohio. The forum was attended by candidates Matt Dolan, Mike Gibbons, Josh Mandel, Jane Timken and JD Vance. 

COLUMBUS, OH - MARCH 18: Mike Gibbons (L) and Josh Mandel exchange heated arguments at the FreedomWorks Forum for Ohio's Republican Senate Candidates on March 18, 2022 in Columbus, Ohio. The forum was attended by candidates Matt Dolan, Mike Gibbons, Josh Mandel, Jane Timken and JD Vance.  (Photo by Andrew Spear/Getty Images)

Mandel said he plans to work with Trump in the general election to beat Sen. Ryan and advance the America First agenda. 

He said many Ohio Democrats are not liberals, and he believes they will also support his campaign.  

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"A lot of those Democrats have been left behind by the Democrat Party, and they’re going to be important in my base once I win this primary seat to beat Tim Ryan and the Democrats in November," Mandel said.