A core lesson of Germany's federal election of September 2005 is the enduring legacy of the communist past in East Germany, a legacy that substantially shapes politics in unified Germany. Fifteen years after unification, the crucial difference in German politics still lies in the East. The 2005 election demonstrated the enduring east-west divide in German party politics. The result is that Germany today has two coherent party systems, one in the East and one in the West. Combined, however, they produce incoherent outcomes. Any party that hopes to win at the federal level must perform well in the very different circumstances in the East.