I see that Jeff Smith, Jo Stevens, Daniel Zeichner and Tulip Siddiq have all decided to defy the Labour whip, there will be more.
What is interesting is the big numbers. Labour has about 74 MPs in Remain voting seats and if they act democratically and do as their constituents voted for they will vote against the A50 Bill. However, some 82 Tory MPs find themselves in the same situation and could also go with their constituents and vote against. There are also seats in Scotland, NI and Wales.
Even if they all band together and vote against it the Bill will still get through by a large margin.
All the muck-raking by the media will not crash Labour any more than it would turn the Tory seats into LibDem ones.
It has all become ar5e about face. On any normal day many millions of voters complain that their MPs do not represent their constituents and vote in parliament as they damned well please, but in this case, when they say they will meet their constituents' demands, the world and his dog are up in arms.