President Trump on Monday blasted Democrats for seeking "big tax increases" as Republican leaders scramble to gain enough support to pass the GOP tax-reform bill before it reaches the Senate floor for a vote.

New home sales reach a 10 year high. Stock Market has more record gains. Hopefully Republican Senators will give us the much needed Tax Cuts to keep it all going! Democrats want big Tax Increases. — Donald J. Trump (@realDonaldTrump) November 27, 2017

Democratic senators have blasted the proposal, saying it provides tax cuts for wealthy individuals and corporations while slashing tax breaks for the middle class.

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Earlier in the day, Senate negotiators worked to gain the support of several Republican senators who have expressed opposition to the bill in its current form, including Sens. Ron Johnson Ronald (Ron) Harold JohnsonThis week: Supreme Court fight over Ginsburg's seat upends Congress's agenda GOP set to release controversial Biden report Democrats fear Russia interference could spoil bid to retake Senate MORE (Wis.) and Steve Daines Steven (Steve) David DainesMcConnell locks down key GOP votes in Supreme Court fight Will Republicans' rank hypocrisy hinder their rush to replace Ginsburg? Toobin: McConnell engaging in 'greatest act of hypocrisy in American political history' with Ginsburg replacement vote MORE (Mont.).

GOP leaders worked to gain Johnson's support ahead of the key vote on the bill before the Senate Budget Committee scheduled for Tuesday.

The GOP tax-reform bill is expected to come to the floor as early as this week.