It will be interesting to see what happens in next years elections as there will be a new Lib Dem Parliamentary Candidate but presumably the same old local Councillors.
Indeed, it will be very interesting! So let's amuse ourselves with a spot of forecasting.
First, a bit of background. Sir Andrew Stunell was first elected in 1997, and has been re-elected at four successive elections since then. In 1997 he won 54% of the vote (i.e. of those who actually voted). Since then his majority has fallen slightly at each election, and at the most recent election in 2010 he had 49% of the vote.
At all four elections, the Tory candidate came second, but the share of the vote has shown no clear trend, hovering around 30%, but rising to 34% In 2010.
Labour have come a poor third each time, with between 12% and 17% of the vote.
Interestingly, UKIP have steadily increased their vote, albeit from a very low start: they won a mere 0.5% of the vote in 1997, but by 2010 this had increased tenfold, to over 5%.
All this is from Wikipedia, of course. See
https://en.wikipedia.org/wiki/Hazel_Grove_(UK_Parliament_constituency)
So here's a prediction based on the above, along with two further assumptions:
1. Sir Andrew attracted a degree of 'loyalty factor' - he seems to have been regarded as a decent and hardworking constituency MP. A new candidate will not benefit from anything like that, of course.
2. There will be in Hazel Grove, as everywhere else, a fall in support for the LibDems because of their participation in the Tory-led Coalition.
On that basis, I'll speculate that the % of the vote in Hazel Grove next year might divide up roughly as follows:
LibDem: 40%
Tory: 25%
Labour: 22%
UKIP: 13%
So my guess, for what it's worth (i.e. no more than anyone else's guess) is that the LibDems will hold this seat with a reduced majority, losing a significant number of votes to Labour, while a few Tory and Labour voters will have defected to UKIP.