Looking back, it's a wonder the party is still together after years of arguing about this issue.
It might have looked like her only choice, but postponing the vote was the wrong move for a weak prime minister.
We can't agree what the 'will of the people' was in 2016, but these are the representatives they elected in 2017.
It's the fairest way to settle this debate – though in the absence of a clear majority supporting either "remain" or a "no deal" it would probably mean accepting Theresa May's deal.
A video aimed at presenting the facts about Brexit repeats some of the same mistakes Remain supporters made before the 2016 referendum.
This group only recently reached voting age, and they'd like to have a say.
Theresa May is courting ethnic minority support for her Brexit deal with her rhetoric on EU nationals 'jumping the queue'.
The deal now needs to be agreed by UK MPs and each EU member state.
Has anyone asked the EU if it actually wants the UK back now?
A change in government could open the path for remaining in the EU. But would it resolve the matter once and for all?
After stitching more than 100 proposed motions into one, what's left will disappoint some members.
The prime minister says the public doesn't want another vote. But what if their faith in the first result isn't based on truth?
The idea that welfare cuts galvanised Vote Leave risks identifying the wrong culprit.
The Conservative party is so divided over Brexit that it may never recover. How ironic that it was the policies of the Cameron government that brought it about.
A survey of British Remain supporters living elsewhere in the EU after the referendum found feelings of shame and loss about what they felt their country had become.
Both Leavers and Remainers are unhappy with the UK's exit plan – but can their dispute ever be resolved satisfactorily?
Most feel they belong, but the Leave decision has left them anxious and insecure.
The rules are clear on campaign donations but meetings with foreign representatives are more of a grey area.
The Electoral Commission has re-opened the case against the official campaign over concerns it colluded with unofficial organisations.
Are British universities under threat of censorship?