There's no serious remain camp left at this point. Despite massive public opposition, there's no real remain platform anymore. May's propositions failed because both sides absolutely shafted them. Her main plan was rejected by the largest majority in the history of the UK Parliament. There was a big crowd of both remainers and leavers outside of the House and all of them cheered when the proposition failed because no one wanted it. The last time anything even remotely as bad (but still not nearly as devastating) happened was in 1924.
In the beginning of April, Parliament then voted on 8 different options for Brexit
. One of the possibilities with the least support? No deal Brexit. The two propositions with the most support (and closest vote, only being defeated by a handful of votes)? A Customs Union with the EU (a very soft form of Brexit) with 49% of the votes and a second referendum with 47%. Even if you'd take all of the remainers out of Parliament, there doesn't seem to be any option that would be supported by a majority of the remaining leavers.
It's very clear that no deal, which is what we're heading for right now and what Johnson is hoping to achieve by shutting down the only directly elected body of the UK government, is an unpopular option both among the elected politicians and the general public
. Around 50% of the people want to stay while the other 50% wants to leave. Out of the 50% that wants to leave, only a minority wants to leave without any deal or arrangement whatsoever. It's crazy that this worst case option that doesn't even have support of a third of all voters is now what the UK is being forced to go through with as if it's "the will of the people". The fact that the prime minister (a huge Brexiteer) is now able to shut down the actually elected body one month before the expiration of the deadline so that it has next to no time left to properly debate or pass anything is just a disgrace no matter where you stand on this.