I'm not sure who I'm going to vote for, but if someone makes a public stand about vaping I'm more likely to listen. I suspect that UKIP are the protest vote of choice for the people who don't like the other minority parties such as green, BNP etc. I do think the current government listens to the minority parties to see which way the wind is blowing though so even if UKIP don't get a significant number of seats in the election I think whoever wins will pay attention to the causes people are voting for. Most of the minority parties have wild and wacky ideas that they know won't ever be taken seriously but occasionally they say something that touches a nerve such as alternative energy or vaping that look good on a mainstream party manifesto.
Farage plays the "common man who likes a beer and a fag" card pretty well. He knows his audience and like him or hate him he isn't one to beat around the bush and keep his mouth shut. I used to love people like Edwina Currie and Anne Widdecombe because even though I hated a lot of what they stood for, at least they actually stood for something. The current lot of both parties believe whatever their spin doctors tell them it is politically expedient to believe and rely on their personalities to whitewash over the cracks in policy.