In my opinion, Hannan is in fact one of the last bastions for many Conservative voters who use true eurosceptics like him along with the likes of Roger Helmer and Douglas Carswell as justification for sticking with the Party, despite Team Cameron have the square root of bugger all in common with such figures.
If they left and joined a Party far closer to their own principles in UKIP, so too would a large section of Tory grassroot support. Of that I am certain.
So it is to the great detriment of UKIP that Daniel Hannan is busy advising voters not to vote for an anti-EU Party, but to vote for his own pro-EU Party because it is somehow better than the Labour and Liberal Democrats. Well, better perhaps if you like some tougher talk. But when it comes to getting a referendum or having any say whatsoever on the EU issue, a Conservative government means nothing and is no better than Labour.
Also, lets please not forget that while David Cameron brought euro-enthusiast Ken Clarke back onto front bench duty, he has barred any anti-EU Tory MP from ever doing so. That speaks volumes.
Finally, and most worryingly I am sure for Hannan and his colleagues, is that as UKIP's Spring Conference illustrated, we are no longer a Party "straight talking" simply on the EU. We now solidly stand for grammar schools, a sceptical stance on man-made global warming and flat tax, I could go on. Of course, for those who support such policies and principles there is no point voting Conservative. They stand for none of these.