WHAT a sorry state Germany’s two big political blocs are in, a month before the election on September 22nd. In the 1970s more than 90% of West Germans voted for the two “people’s parties”: the “red” Social Democrats (SPD) and the “black” Christian Democrats (CDU) and their Bavarian sister party, the Christian Social Union. The difference was clear: red stood for unions and fairness, black for conservatives, business and the church.But the people have deserted the people’s parties. In the 2009 election, almost half the voters chose smaller competitors: chiefly the Greens, the Left and the Free Democrats (FDP). The blacks and reds have also lost members: the CDU 40% since unification in 1990, the SPD almost 50%. In a recent poll 69% of voters said they could not even tell the difference. It was an SPD-led government that pushed through labour-market reforms in 2003. The government of the CDU chancellor, Angela Merkel, has been inching leftward, ogling everything from rent controls to a minimum wage.This week the SPD’s chairman, Sigmar Gabriel, sidled away from its most distinctive policy: higher income taxes and a wealth tax. They were “not sexy”, he said: a…