Again, depends on which side of the fence you are on.  

If May wins then I can’t see much harm done - it may even strengthen her position with the EU.

If she loses and ‘hard’ Brexiteers such as Rees Mogg or Johnson, gain control of the negotiations, (either directly or via a proxy), then we could well be in trouble and exit without a deal becomes far more likely.

Many at first would probably welcome this but they need to look at the motives behind the hard line such politicians take.  They are not interested, in my opinion, in the little people. They’re looking for a low tax, low regulation system with a low cost labour force.  Such a system relies on immigration to supply that labour force.  Oh yes the EU won’t be able to dictate our immigration policy but neither will the people, they will.