Federal Medicaid funding could drop by as much as 39 percent over the next two decades under Senate Republicans' healthcare plan, according to a report presented at the National Governors Association meeting.

The report, authored by the consulting firm Avalere Health and first reported by Politico, estimates that the GOP's plan to overhaul large parts of the country's healthcare system would offer deep cuts to Medicaid, ranging from 27 to 39 percent.

Among the states that would be hit the hardest by the cuts are California, Washington, Oregon, Nevada, New Mexico, North Dakota, Minnesota and Kentucky, among others that would see funding reductions of 35 percent or more.

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States like Arizona, Utah, Colorado, Illinois, Indiana, Ohio would see cuts between 30 and 35 percent, according to the report. Only 19 states would be hit by spending reductions under 30 percent.

The estimates were presented to a gathering of the country's governors in Providence, R.I., that also included some Trump administration officials, like Health and Human Services Secretary Tom Price Thomas (Tom) Edmunds PriceConspicuous by their absence from the Republican Convention Coronavirus Report: The Hill's Steve Clemons interviews Chris Christie Trump flails as audience dwindles and ratings plummet MORE, Politico reported.

Senate GOP leaders are hoping to hold a final vote on their healthcare bill next week But the measure's success is uncertain, with two GOP senators saying they will not vote to approve the bill. Just one more Republican defection would ensure its failure.