Sen. Susan CollinsSusan Margaret CollinsPoll: McConnell is most unpopular senator Hillicon Valley: Lawmakers struggle to understand Facebook's Libra project | EU hits Amazon with antitrust probe | New cybersecurity concerns over census | Robocall, election security bills head to House floor | Privacy questions over FaceApp Trump angry more Republicans haven't defended his tweets: report MORE (R-Maine) said on Monday that she will support the GOP tax plan as leadership appears to have the votes to pass the bill. 

"I rise to express my support for the conference agreement on the Tax Cuts and Jobs Act. ... This legislation will provide tax relief to working families, encourage the creation of jobs right here in America and spur economic growth that will benefit all Americans," Collins said from the Senate floor. 
 
She added that "most Maine households with see their taxes go down." 
 
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Senate Republicans believe they have the votes to pass the tax plan as soon as Tuesday evening. 
 
With a 52-seat majority, they can only afford to lose two GOP senators and still let Vice President Pence break a tie. 
 
Sen. John McCainJohn Sidney McCainStephen Miller hits Sunday show to defend Trump against racism charges Michelle Obama weighs in on Trump, 'Squad' feud: 'Not my America or your America. It's our America' Meghan McCain shares story of miscarriage MORE (R-Ariz.) is expected to miss the tax vote, and Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeFlake urges Republicans to condemn 'vile and offensive' Trump tweets Flake responds to Trump, Jimmy Carter barbs: 'We need to stop trying to disqualify each other' Jeff Flake responds to Trump's 'greener pastures' dig on former GOP lawmakers MORE (R-Ariz.), who supported the Senate bill, hasn't said if he will back the conference agreement. But GOP Sens. Bob CorkerRobert (Bob) Phillips CorkerTrump announces, endorses ambassador to Japan's Tennessee Senate bid Meet the key Senate player in GOP fight over Saudi Arabia Trump says he's 'very happy' some GOP senators have 'gone on to greener pastures' MORE (Tenn.), Marco RubioMarco Antonio RubioAna Navarro lashes out at Rubio for calling outrage over Trump's 'go back' tweet 'self righteous' US-Saudi Arabia policy needs a dose of 'realpolitik' Media cried wolf: Calling every Republican a racist lost its bite MORE (Fla.) and Mike LeeMichael (Mike) Shumway LeeThe Hill's Morning Report — Mueller Time: Dems, GOP ready questions for high-stakes testimony This week: Mueller dominates chaotic week on Capitol Hill Overnight Health Care — Presented by PCMA — Health care moves to center stage of Democratic primary fight | Sanders, Biden trade sharps jabs on Medicare for All | Senate to vote on 9/11 bill next week | Buttigieg pushes for cheaper insulin MORE (Utah), three key holdouts, have said they will support the bill. 
 
Collins supported the Senate's version after getting her amendments included in the bill, as well as a promise from Senate GOP leadership to pass the bills aimed at stabilizing the individual health insurance market under ObamaCare. 
 
Several amendments that Collins offered were incorporated into the bill, including the restoration of a $10,000 deduction for state and local property taxes and a lower threshold for deducting medical expenses.