Sen. Susan Collins Susan Margaret CollinsGraham: GOP will confirm Trump's Supreme Court nominee before the election Gardner signals support for taking up Supreme Court nominee this year Tumultuous court battle upends fight for Senate MORE (R-Maine) has doubled the amount of money she's requesting in her ObamaCare stabilization bill in exchange for her vote on the GOP's tax-reform plan.

Collins, a key vote on tax reform, is pushing for the passage of two ObamaCare bills in an attempt to mitigate the effects of the tax bill's repeal of the individual insurance mandate.

One of those bills — sponsored by her and Sen. Bill Nelson Clarence (Bill) William NelsonDemocrats sound alarm on possible election chaos Trump, facing trouble in Florida, goes all in NASA names DC headquarters after agency's first Black female engineer Mary W. Jackson MORE (D-Fla.) — would provide states with $10 billion over two years to establish high-risk pools or reinsurance programs to lower premiums.

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That's more than double the $4.5 billion originally requested in her bill, which she introduced in September.

Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellGraham: GOP will confirm Trump's Supreme Court nominee before the election Trump puts Supreme Court fight at center of Ohio rally The Memo: Dems face balancing act on SCOTUS fight MORE (R-Ky.) said he would support passage of both bills, which could be added to the end-of-year spending deal.

"This plan will provide $5 billion annually for two years in seed money for states to establish invisible high-risk pools or traditional reinsurance programs," Collins said in a statement Friday.

"We know from experiences in the states of Maine and Alaska that high-risk pools can help to lower premiums substantially — by an average of 20 percent," she said.

Collins had concerns that the tax bill's repeal of the individual mandate would increase insurance premiums.

She hopes the passage of her reinsurance bill, plus a bill authored by Sens. Lamar Alexander Andrew (Lamar) Lamar AlexanderGraham: GOP will confirm Trump's Supreme Court nominee before the election The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy This week: Supreme Court fight over Ginsburg's seat upends Congress's agenda MORE (R-Tenn.) and Patty Murray Patricia (Patty) Lynn MurrayTrump health officials grilled over reports of politics in COVID-19 response CDC director pushes back on Caputo claim of 'resistance unit' at agency The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-Wash.), would mitigate those increases.

It's not clear when Collins requested an increase in reinsurance funding.

However, experts have said reinsurance would need at least $10 billion per year to effectively mitigate the effects of repealing the mandate.

The nonpartisan Congressional Budget Office estimated that repealing the mandate would increase premiums by about 10 percent.

Collins voted in favor of the Senate GOP's tax plan early Saturday morning, saying she had "commitments" that the ObamaCare bills would be passed.