In practical terms, what choice do we have in choosing our economic system, our education system, or our health service?
When it comes to economics, there's a hair's breadth between the major parties if that. They all want to manage a globalized monetarist economy, and compete over the best way to do it.
In England at least, Labour and the Tories argue over the best way to introduce competition into health and education, but they both see that as the way forward, using competition for resources/funds with the resulting inequalities as a way of "driving up standards".
So, basically we have little real choice in terms of how we are governed, it's mostly just minor tweaks and window dressing. Even if I agreed with all those approaches, which I don't, I would still expect to be given a real choice in each area. Otherwise what is the point of democracy?