Transcript for Prime Minister Theresa May postpones Brexit vote

So we just learned in the last twenty minutes and that the prime minister to recent may. Has decided to delayed the vote for Braxton so want to throw too piece of her talking about this right now. I'd listen very carefully to what is being said in this chamber. Okay. Just being sad in this change. It's by members hold signs. From listening to those views it is clear that while there is broad support for many of the key aspects of anti. On one issues on one issue the Norma plaques all that remains widespread and deep concern. As a result if we went ahead and helps the tapes tomorrow the deal would. We will four defense. The vet check for tomorrow. Smoltz received to divide the house asking. It's time. You can see her announcement causing a little bit of Iraq a spare in the British government. We remember a majority of the brakes on voted to leave the EU in 2016. And now wanna go to Molly hunter who's in our London bureau and is to let us know what's happening now Molly what's the latest in and what's the recent. Goings on on this this bricks and deal. Kim hey good afternoon so that trades and not to belittle racquets a lot of rockets the way that only the UK parliament can deliver so what we're talking about today. Is the deal that the UK and the EU have negotiated for months have agreed upon that now goes to the UK parliament for a vote and as you just heard prime minister trees may sank. She wasn't confident that that vote which was best be held tomorrow on Tuesday. Would actually passed so what she's done is delayed and we don't know when. That delay when that vote will actually happen. But she wasn't sure that it would actually obviously got this for she wanted to she is sent her colleagues that she will go back to the Europeans. And get some reassurance that Kim we've heard from her we've heard from European leaders that this is the final deal this is the best deal that she believes she can get for Brit now the opposition party. I'd doesn't believe that at let's just take a listen to one mark piece of sound from her she asked her colleagues some key questions and these questions will really got asked let's take a lesson. It is clear that this house bases and much more fundamental question. Does this house wants to did it Rex six. Does it want to do so through reaching an agreement with the EU's. It's beyond its yes and I believe that is beyond some of the majority of his house. And we all have to ask ourselves whether we have the pad to make a compromise. Because there will be no enduring and successful bricks it without some compromise on both sides. Interesting grant sit can you just heard as key questions and that's the big question is are they going to reach a compromise their couple options bear with me because they're a little bit confusing so there is an option. For a no deal brags it's a basically be UK. I debt parliament doesn't agree doesn't vote on this. A deal that. The brits have negotiated with the Europeans. If the brits were gonna pass this Kim Trout would have been kicked to the Europeans. But doesn't like that's gonna happen so there is an option brain no deal brags that now what does that look like that means that basically. Every agreement in place between the UK and EU gets frozen right now that's trade agreements that's agreements for truckers to get across the English Channel that means cam. If I hop on a plane right now and it is flying tapestries I can't get op because I don't have of these acts. Now all of that would just be frozen with nothing in its place and obviously. The brits and UK politicians. It would be in our interest to pass legislation to go into that's not an option number 19 no parliamentarian wants that option. Option number two cam is a second now it's possible Teresa may now in the next couple of days doesn't tweaks this deal comes back. Puts it forward to her colleagues. This support that came is so low that doesn't sound like even that would be acceptable to most people in that chamber. The third option a major renegotiation again unlikely sit treats may could go back. To the Europeans and say we won actually. I'd toss out a lot of the work that's been happening in last two years. And renegotiate some of these big points but again we've heard from her we've heard from European leaders that this is the Bastille this is the final deal say that's unlikely as well. Fourth option can stick with me here I know it's confusing is it general election so she could call for a general election essentially to reaffirm her mandate she doesn't have a mandate. Today which is quite clear you mention that raucous behavior it's still going on right now. But that's pretty risky because again she doesn't have widespread support. There could be a vote of no confidence of the opposition party can essentially call for a vote of no confidence that would forcing general election. That's also risky and may Patrice made out of power as well. And the final six that very unlikely option. Is another referendum that essentially everyone in this house of commons decides we don't wanna know until bragged that so what's the other option and and that's to kick it back at the people. It's about on this camp. Yes I know this is happening in the UK but whenever this vote takes place what does it mean for Americans. That is a very good question actually means a lot even before the vote takes place it means that the pound is fine which means your dollar. It's stronger it means my rent is cheaper today. And it means that hotel rooms are allot cheaper at camp but your flight now in Hannover for a fun Christmas in the UK is that we'll be cheaper for Americans.

This transcript has been automatically generated and may not be 100% accurate.