Do Abortion Attitudes Lead to Party Switching?

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Abstract
The notion that issues and ideology can move partisanship remains controversial. The authors explore the stronger claim that issues can lead people to switch political parties and whether the effect of abortion attitudes is asymmetrical (i.e., abortion attitudes may influence party switching in only one direction). They show that in several short-term National Election Studies panels, pro-life Democrats were significantly more likely than other Democrats to become Republicans, but pro-choice Republicans were not likely to become Democrats. However, using panel data over a long time frame, 1982 to 1997, the authors also demonstrate that the cumulative effect of abortion attitudes led pro-life Democrats and pro-choice Republicans to switch parties.