A person who chooses to vote for Liberal Democrats, in turn voting for Nick Clegg to be primeminister, in UK politics.
Also, linked to cleg nuts
as they are both annoying hangers on, you don't know where to stand with them, plus they smell.
Dave: I'm totally voting LibDems this election, Nick Clegg will really help this country out.
Mitch: Mate, you're such a fence sitting Clegg Nut!