Someone in support of a system of government that is not quite a democracy, but not quite a dictatorship, either- for instance, Germany's Kaiser had a bit of power, and used said power (though, Wilhelm II being what he was, his 'friends' and advisors had quite an impact on that use), but there's also the Reichstag, in control of the budget (and some other things), and elected by universal male suffrage, in free and secret elections.
In other words, authoritarian, but with a significant democratic element.