Kentucky Sen. Rand Paul vowed Saturday night that he would reveal a bill to replace ObamaCare next week.

Paul, a Republican, tweeted a photo of the first page of the bill he titled the “Obamacare Replacement Act.” He added: “Done drafting the bill & will be discussing on CNN Sunday AM and all week next week!”

Last week, Paul was the lone Republican to vote against the budget which would repeal the Affordable Healthcare Act after expressing his displeasure because it endorsed huge budget deficits. He wasn’t the only one to have expressed anxiety over dismantling the law without a replacement to show voters.

Sen. Susan Collins, R-Maine, said she wants at least to see "a detailed framework" of a GOP alternative health care plan before voting on repeal. She said Republicans would risk "people falling through the cracks or causing turmoil in insurance markets" if lawmakers voided Obama's statute without a replacement in hand.

Congressional Republicans took the first step Friday to dismantling President Barack Obama’s trademark healthcare law. The Senate voted 51-48 for a budget that eased the way for action on subsequent repeal-legislation as early as next month. The House voted 227-198 in favor of the move on Friday.

The budget "gives us the tools we need for a step-by-step approach to fix these problems and put Americans back in control of their health care," House Speaker Paul Ryan, R-Wis., said after the vote.

Congressional Republicans have made annulling Obama's law and replacing it a top goal for the past seven years. GOP rifts and an Obama veto prevented them from achieving anything other than holding scores of votes that served as political messaging.

President-elect Donald Trump also made targeting Obama's statute a primary target during his campaign. At his news conference Wednesday, Trump — who's supplied few details of what he wants — said his emerging plan will be "far less expensive and far better" than the statute.

Many Republicans have insisted on learning how their party will re-craft the nation's $3 trillion-a-year health care system before voting to void existing programs.

There are internal GOP chasms over Republican leaders' plans to use their bill to halt federal payments to Planned Parenthood and pare Medicaid coverage. There are also disagreements over how to pay for the GOP replacement, with many Republicans leery of Ryan's proposal to tax part of the value of some health insurance provided by employers.

The Associated Press contributed to this report.