Party Politics, Ahead of Print.
Parties and their actions almost always shape the preferences, attitudes, and behaviour of their voters. However, does partisan influence over public opinion apply to all policy proposals regardless of their initial popularity and to all voters regardless of their degree of partisan attachment? This question is addressed in the real-world context of Finland, where the government enacted two reforms at the same time: an initially popular reform extending the age of compulsory education, and an initially unpopular removal of the ‘retirement tube’ for older laid-off workers. An original panel survey asked respondents about their attitudes before and after the government actions, finding that while voters of government parties increasingly tended to support the enacted policies, the magnitude of opinion change depended on voters’ initial policy preferences and party attachment. Strong party attachment led to government voters increasing their support for a reform that they initially opposed. In contrast, those with weaker partisan attachments tended to alter their preferences for an initially popular reform. These findings are relevant for understanding partisan influence over public opinion in a broader political context.