It is very early as the date hasn't been set and the candidate list not named but this is how the bookies market show the vote share so far.
UKIP 18 %
LIBDEMS less than 5%
still leaves 15% to play with
This is based on the above / below margins for vote percentage betting.
There is also a strong market for losing your deposit
CONSERVATIVES 7/2 was 9/2
LIB DEMS 5/6 so they say better than evens chance they will.
At least a months worth of speculation.