"There are these longtime Democratic voters disenfranchised by democratic policies, ready to vote for conservative solutions, but we can't just expect them to show up on their own and start voting for us," Zeldin said.
It was a call to action for leaders to reach out to voters that maybe for years have voted for Democrats just out of habit.
The push comes after an inspiring end to Monday, after former president Donald Trump made a surprise appearance, with his injured right ear covered in a white bandage.
His presence left a lingering mark on the members of the Illinois delegation.
"He's injured, and he didn't care. He had a bandage on his ear, and he was there for the party, for American people, and we loved it," Balwinder Chhokar, Sahota Alternate Delegate said.
The sense of unity that Illinois Republicans have been talking about was called into question with many of the so-called establishment Republicans seemingly absent from the convention.
"So, you don't have to love Donald Trump because I've talked to a lot of people, say, 'I don't like the man, but loved his policy. And I'm going to vote for him.' We need those people to vote for this platform, and help bring other Republicans in with it," state Rep. Charlie Meier said.
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Newly elected Illinois GOP Chair Kathy Salvi made her first convention appearance, chatting with delegates, but declined to take questions on Tuesday.
"I think America is going to see very clearly that the big tent party is here. We're strong. We're united, and honestly someone like Corey Brooks, speaking on the stage tonight, should send a message that we are united in that message, and we're united going forward," state Sen. Terri Bryant said.
Brooks, a Chicago rooftop pastor who has been a strong anti-violence voice, will be the final speaker on Tuesday by offering the closing prayer.