Senate Democrats on Friday ripped Republicans for making last-minute handwritten changes to a version of their tax-reform legislation mere hours before the chamber is expected to vote on it. 

"They are scribbling changes in the margins. What could possibly go wrong," Sen. Brian SchatzBrian Emanuel SchatzOvernight Health Care — Presented by Purdue Pharma — Democrats, McConnell spar over entitlements | Minnesota AG sues drugmakers over insulin price hikes | CDC investigates polio-like illness GOP shrugs off dire study warning of global warming Dems to force health care vote weeks before Nov. midterms MORE (D-Hawaii) tweeted, with a photo showing a column of scribbled notes next to a section of the lengthy bill.

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The version of the bill Democrats are criticizing does not include a final GOP amendment that hasn't been filed yet.

"Trying to review the #GOPTaxScam but they are making hand-written changes to brand new text as we speak – can anyone else read this?" tweeted Sen. Dick DurbinRichard (Dick) Joseph DurbinGOP senators: Mnuchin should not go to Saudi Arabia Durbin opposes Saudi arms sale over missing journalist Noisy democracy, or rude people behaving like children? MORE (D-Ill.), sharing the same page of the law.

Durbin also criticized the process on the Senate floor, saying the GOP wrote out the bill "in longhand" and provided an illegible "work product" to lobbyists before handing it over to the senators voting on it.

 

Multiple senators criticized the GOP for making handwritten changes, including Sens. Bob CaseyRobert (Bob) Patrick CaseyDems target small cluster of states in battle for House Overnight Health Care — Presented by Purdue Pharma — Trump officials move to require drug prices in TV ads | 4,000 more people lose Medicaid in Arkansas | New top official for Medicaid Election Countdown: Cruz, O'Rourke fight at pivotal point | Ryan hitting the trail for vulnerable Republicans | Poll shows Biden leading Dem 2020 field | Arizona Senate debate tonight MORE Jr. (D-Pa.), Bob MenendezRobert (Bob) MenendezTrump lowers refugee goal to 30,000, he must meet it Blame Senate, not FBI, for Kavanaugh travesty Dems urge tech companies to remove 3D-gun blueprints MORE (D-N.J.) and Jon TesterJonathan (Jon) TesterThe Hill's Morning Report — Presented by the Coalition for Affordable Prescription Drugs — Trump travels to hurricane-ravaged Florida, Georgia Trump adds campaign stops for Senate candidates in Montana, Arizona, Nevada Democrats hold fading odds of winning Senate this November MORE (D-Mon.). House Minority Leader Nancy PelosiNancy Patricia D'Alesandro PelosiElection Countdown: Dems outraise GOP in final stretch | 2018 midterms already most expensive in history | What to watch in second Cruz-O'Rourke debate | Trump raises 0M for reelection | Why Dems fear Avenatti's approach GOP strategist says Trump could want border wall fight to continue to excite base McConnell says deficits 'not a Republican problem' MORE (D-Calif.) also joined the criticism.

The Senate is expected to vote on the sweeping legislation late Friday, following a day of negotiations among Republicans, almost all of whom need to vote for the bill for it to pass.

The legislation, if passed, would be the largest tax reform in the U.S. in three decades, marking a historic victory for the Republican Congress and the Trump administration.