comment: >
  
  I'm not sure that NI is that high on the radar for most UK nationalists (or that UK nationalists are a big enough constituency to bin a PM for that matter..), throw in that a referendum would neatly pass the 'blame' to those that voted, rather than the PM who offered it, doubly so if it were as a result of a process enshrined in an agreement the UK had in place for a long time prior.  
  Lastly, the Scottish IndyRef shows that it's viable and fairly current for a Government to offer a vote, even if the potential outcome is a part of the UK splitting away. Throw in that the EU referendum shows that UK Governments/Parliaments will follow through with referendum outcomes even where they broadly oppose the outcome, and it gets hard to argue that the UK wouldn't allow something to happen.
context: Just give it back to Ireland >
  
  The problem with that is that no uk prime minister wants to be the pm that sees uk give up land so close to home. >
  
  And you'd sort of need the people who live there to agree.. There is a whole process set up for that after all. >
  
  You really think the UK will let that happen. >
  
  The UK has run a border poll in NI before, the GFA explicitly sets out the route to one, and the UK has run other referenda (most recently in Scotland) in independence. So yes? >
  
  It’s not that I doubt they don’t have the means I just doubt a sitting pm would ever allow it because UK nationalists would campaign to get them out of power afterwards.