Why Vote Libertas?

I used to vote Liberal Democrat in the European elections, because they were pro-Europe, but last year , in the Lisbon treaty votes in Parliament, the Liberal Democrats changed their minds and refused to support the proposal for a referendum on the Treaty showing to my mind that they were not democrats at all despite their title. If the Liberal Democrats had voted in favour of a referendum then there is a good chance that we would have had one.
Yet again politicians have shown contempt for the people