Yes you are correct about the risk of a split, yes it may hurt the Tories chances of a big majority BUT the onus is wholy on the Tory high command to show us what they stand for clearly and honestly, if the Tories wanted a massive majority the answer is to answer the demands of the electorate.

The Tory party has a moral duty to be honest and upfront, the sneaky fence sitting and sly manipulations should be left to the others.
I can see your point though and its a valid fear to hold although I value open honest politics where people know fully what the party stands for above party tribal loyalty.
The Blair years gave us a bellyfull of anti democratic one voice/on message politics where we were all expected to toe the party line and trust the leadership.
IF there is a split vote between the Tories and UKIP its the Tory high command that must shoulder the blame for alienating the rank and file supporters, the vast majority of the population demand a full clear vote on the federal EU and unless Cameron bites the bullet and sets out a clear and honest line on this he is inviting a split.
How does it look to the average voter who wants to vote Tory but cannot be sure that they will abide by the voters wish for a democratic say on the EU federal integration.
The simple way to avoid a split vote is not to invite one.

BTW TAT is one of the best posters on this blog(when he isnt picking fights of course) he often nails a subject because he has no party loyalties to drag him down and that is the key here isnt it?

The problem with hammering the ‘rich’ is that they can afford the advice on tax mitigation measures, or they up sticks and go abroad, taking their skills and earnings with them. Better to tax them a reasonable percentage of high earnings than a high percentage of nothing-because-it’s-gone.