NEW YORK (CNNMoney) — The Senate Republican health care bill would leave 22 million fewer Americans with health insurance by 2026 than under Obamacare, the nonpartisan Congressional Budget Office said Monday.

The highly anticipated score answers key questions about the impact of the Senate’s controversial legislation made public last Thursday.

The House passed its version of an Obamacare repeal bill in May. That legislation would leave 23 million fewer Americans with health insurance by 2026 than under the Affordable Care Act, CBO said earlier.

Like the House bill, the Senate’s version would end enhanced funding for Medicaid expansion, though at a slower pace, while overhauling the entire Medicaid program. It would eliminate the mandates that require nearly all Americans to have coverage and companies with more than 50 workers to provide health benefits. And it would jettison Obamacare’s taxes on the wealthy, insurers and others, while allowing insurers to charge more to older policyholders.

However, the Senate bill would maintain much of Obamacare’s subsidy structure to help people pay for individual coverage, but make it less generous, particularly for older enrollees. And it would keep more of Obamacare’s insurance regulations than the House legislation.

The Senate version also provides funds to stabilize the Obamacare market over the next few years, including money for a key set of subsidies for insurers.

Senate Majority Leader Mitch McConnell is insisting on a vote this week before lawmakers leave town for the July 4th recess. There are 52 Republican senators, and he needs 50 “yes” votes to move the bill through the Senate. At least five Republicans have so far publicly stated that they cannot support the legislation in its current form.