Sen. Ted Cruz Rafael (Ted) Edward CruzSenate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week Renewed focus on Trump's Supreme Court list after Ginsburg's death MORE (R-Texas) hedged on Wednesday night about the Senate's chances of passing the GOP bill to repeal and replace ObamaCare.

"The process of repealing it in Congress has been messy. It's been bumpy. I am not certain we will get it done. I hope we will. I believe we will," the GOP senator said during a town hall with Concerned Veterans for America (CVA), a conservative outside group.

GOP leadership is still trying to reach a deal that could clear the Senate. With no Democrats expected to support its legislation, it'll need to win over at least 50 GOP senators.

Cruz noted that the requirement, which allows leadership to lose only two senators, "isn't easy."

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Cruz is holding a string of town halls this week with CVA expecting to focus on reforming the Department of Veterans Affairs and veterans-related issues.

But he got into a brief back-and-forth with an attendee during his town hall on Wednesday night, who questioned the GOP senator on the healthcare plan.

Cruz, noting he wouldn't "engage in yelling back and forth," recommended those interested in healthcare go rewatch his CNN debate with Sen. Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE (I-Vt.).

"Bernie's view is he wants free everything for everyone. And you know that is wonderful — in a world where you believe in Santa Claus and the Easter Bunny and pixy fairies, you can give free everything to everyone. But in the real world that doesn't work," he said.

Cruz was part of the working group convened by Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE (R-Ky.) to craft the Senate's proposal.

He's also been pushing for an amendment to the Senate bill that would allow insurers to sell plans that do not comply with ObamaCare insurance regulations, so long as they also sell plans that comply with those rules.