Actually, in
Holland it would be a little more complicated than all that also because of our multi-party system, bless it ...
I.e., on the left, the major party is Labour, and the bulk of its supporters still are lower-educated.
But to the left of it, the smaller Green Left has a very high-educated electorate. So do the Democrats, a small centrist party to the right of Labour, whose electorate is as high-edcated as the Greens', but a lot wealthier. The far-left Socialist Party, meanwhile, has a very "proletarian" base but has been attracting an elite constituency the past eight years as well.
On the right, there are two major parties. The voters of the pro-market, libertarian-minded VVD are in majority highly educated. Those of the Christian-Democrats often have average-level education. Voters of the (now quite small) populist right-wing List Fortuyn are overwhelmingly lower-educated.
I think you can pretty much find the same patterns in
Germany. The Socialdemocrats' voters are still largely working class, but the Green Party is a different story. Back in 1980, its voters were the poorest of all (squatters, students etc). Now, the Greens have the wealthiest supporters of all. On the right, the large Christian-Democratic party has across-the-board support, while the small Free Democrats have a highly-educated base.
In
Britain, the Labour Party is
still a working class party, despite 'New Labour' stereotypes. Members of the Conservative Party are much higher educated than those of Labour - though the ever more left-leaning Liberal Democrats "have an even more upmarket social profile".