The German grand coalition of 2005–09 and party system change: Catalyst or continuity?

Two times in the last fifty years grand coalitions have altered traditionally bi-polar patterns of German electoral competition, changing the electoral context by making it difficult for voters to endorse anti-incumbent alternatives. How have voters reacted under these circumstances, and were their responses different because of the weakening of partisan attachments in the forty years between the two grand coalitions? This study explores these questions by examining voter behavior in German state elections under the federal grand coalitions of 1966–69 and 2005–09, comparing voters’ responses with long-term trends in German party system development. The second grand coalition saw a continuation of trends in declining turnout and increasing electoral volatility, but in contrast to the first grand coalition there was no surge in support for far-right parties. Such a change may be the result of differences between the party systems in the two period, with voters in unified Germany having many more options for expressing discontent.

► This studies voting behavior when grand coalitions eliminate anti-incumbent choices.
► German voters reacted differently under its two federal grand coalitions.
► This difference may be due to the wider range of party options in the later period.
► The second grand coalition did bring changes in Germany's state level party systems.