The Liberal Democrats will add a heart to a Conservative government and a brain to a Labour one.

[All governments] get into a rut where every potentially good story turns into a bad one.

The Liberal Democrats will add a heart to a Conservative government and a brain to a Labour one.

Although I am a young leader, I actually came to it strangely quite late. I have a different perspective, partly because of my family, partly because of what I did for ten years: negotiating trade deals, working out in Central Asia doing assistance projects.

I think it is a simple statement of principle that in a democracy you should make your MPs work harder for your vote and try and get at least majority support in their local area, and that in a nutshell is what AV does.

If you scratch below the surface and ask what really makes me tick, it's the liberalism of trying to promote freedom and opportunity. Promoting social mobility is one of the keys to that.

I genuinely believe that we will look back on today as a landmark for equality in Britain ... No matter who you are and who you love, we are all equal. Marriage is about love and commitment, and it should no longer be denied to people just because they are gay.