REUTERS/Toby Melville The House of Commons will spend the next two days debating and voting on crucial amendments to Theresa May's flagship Brexit legislation. MPs will vote on up to 15 amendments, with the first votes taking place on Tuesday evening. The government is facing knife edge votes on the customs union and single market. However, the most likely defeat for May is the meaningful vote amendment, which seeks to give Parliament the power to take control of Brexit if the prime minister's Brexit deal is voted down. Here is everything you need to know. LONDON — The Brexit process has reached a decisive moment this week, with MPs set for two days of vote on up to 15 amendments to the EU Withdrawal Bill, Theresa May's flagship legislation for implementing Brexit.See the rest of the story at Business InsiderNOW WATCH: This top economist has a radical plan to change the way Americans voteSee Also:Theresa May's foreign minister says a second Brexit referendum is now 'possible'These Conservative rebels believe support for a Norway-style soft Brexit is at a tipping pointIt would be 'very difficult' for Norway to say no to Britain agreeing a soft BrexitSEE ALSO: It would be 'very difficult' for Norway to say no to Britain agreeing a soft Brexit DON'T MISS: Exc: Lib Dems expect 'strong second' place finish in Lewisham East as anti-Brexit voters punish May and Corbyn