The first years of the Kleptocracy were, at lest formally, politically more or less democratic. Also possibly a few years somewhere in there between the revolutions of 1905 and 1917; perhaps some of the last years of Czarist rule could be said to have been more of a contitutional monarchy than an absolute one.

But yeah, that's at most two decades out of the last thousand years or whatever. So on the whole as soon as the Russian people have got rid of one dictatorship, they seem to have been pretty damn eager to replace it with another one.