Abstract
This article analyses stability and volatility of party preferences using data from the Swiss Household‐Panel (SHP), which, for the first time, allow studying transitions and stability of voters over several years in Switzerland. Analyses cover the years 1999–2007 and systematically distinguish changes between party blocks and changes within party blocks. The first part looks at different patterns of change, which show relatively high volatility. The second part tests several theories on causes of such changes applying a multinomial random‐effects model. Results show that party preferences stabilise with their duration and with age and that the electoral cycle, political sophistication, socio‐structural predispositions, the household‐context as well as party size and the number of parties each explain part of electoral volatility. Different results for within‐ and between party‐block changes underlie the importance of that differentiation.
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