The next election for the "Bundestag" was on 22 September 2002. Gerhard Schröder led the coalition of SPD and Greens to an eleven-seat victory over the Christian Democrat challengers headed by Edmund Stoiber (CSU). Three factors are generally cited that enabled Schröder to win the elections despite poor approval ratings a few months before and a weaker economy: good handling of the 100-year flood, firm opposition to the US 2003 invasion of Iraq, and Stoiber's unpopularity in the east, which cost the CDU crucial seats there.