Nick Clegg will issue an uncompromising warning to David Cameron today, with a speech telling him to stop playing parliamentary games with his backbenchers and "get back to governing".
The bill allowing same-sex marriage has passed its final Commons vote by 366 votes to 161 – a majority of 205.
Read David Cameron's letter to Tory members trying to patch up the "swivel-eyed" row - in full and unedited.
Ukip is now within touching distance of the Conservatives, with the eurosceptic organisation polling just two per cent behind the governing party.
David Cameron was saved from a potentially humiliating Commons defeat on gay marriage by the Labour party tonight, after a complicated series of political manoeuvres saw the prime minister face another damaging rebellion from his backbenchers.
The government can't have it both ways: Either no-one wants civil partnerships or they will cost lots of money. It can't be both.
Labour's poll lead has started to rally after several weeks of Tory infighting over Europe.
The Conservative party was in disarray today, after it was hit by multiple rows on Europe, gay marriage, and a growing disconnect between the leadership and its members.
Tradition, sarcasm and extraordinary silliness mix in committee room ten as the private members' bills are selected.
Read David Cameron's draft bill on an EU referendum - in full and unedited.
David Cameron was pitted in a game of competing parliamentary procedures today, as he tried to use a private members bill to outflank a rebel amendment to his Queen's Speech.
Eurosceptic troublemakers have forced David Cameron into a reluctant equivocation which collapses under scrutiny. By refusing to listen to them, they are making him play a terrible political price.
The Conservatives are sabotaging their own Queen's Speech just for a symbolic vote on Europe. What exactly is going on?
The Queens Speech comes apart at the seams almost as quickly as the omnishambles Budget.
David Davis' continued rebellions against David Cameron took on a new urgency last night after he branded moves to restrict immigrants' access to NHS treatment uncivilised.
The short period of unity the Conservative party has enjoyed since the death of Margaret Thatcher seemed to be falling apart today, as Downing Street offered a nervous and baffling response to a manoeuvre by Tory backbenchers.
Another senior Conservative has broken cover and said Britain should leave the EU regardless of the deal David Cameron secures in Brussels, as the party continues to be knocked sideways by Ukip.
Nadine Dorries was finally reinstated as an MP today, amid rumours of a possible defection to Ukip.
The Queen's Speech debate has seen Ed Miliband and David Cameron issue some of their harshest ever attacks on each other, after the Labour leader told the prime minister he was "in office but not in power".
Cameron does enough to alienate centrists but not enough to placate his backbenchers.
Former chancellor Nigel Lawson has issued a challenge to the authority of David Cameron by insisting he will vote against membership of the EU whatever deal the prime minister might be able to secure.
Nigel Farage has David Cameron firmly in his sights after last week's dramatic election results, suggesting a Tory-Ukip deal could be possible if the prime minister stands down.
David Cameron vowed to show Ukip a newfound respect today, after the party's unprecedented surge in the local elections gave the Conservatives a bloody nose.
Boris Johnson's younger brother will begin his first day as David Cameron's new head of policy this morning, amid signs the Conservatives are starting to make a recovery.
Public health minister Anna Soubry has called on disenchanted backbench colleagues to end the "tw*ttery" undermining David Cameron – before attacking the prime minister herself.