How do voters decide which parties to support in multi-party democracies? The prevalent explanation is that stable social model factorssocial class, residence, religiosity, and otherspredispose voters to choose a specific party. This theory is hard to reconcile with the growing rates of electoral volatility and decline of partisanship. Some scholars suggested that these changes mean that the short-term factorsevaluation of the economic performance or individual appeal of the party leaderare gaining more power while the impact of social model factors is weakening.In this research, I challenge this argument and advance a new theory that argues that social model factors can impact voters' decisions even when they do not push them to vote for a specific party. In addition to the well-known party predisposition, I argue that the social model factors can create a bloc predisposition, which is undertheorized and understudied in previous research. Specifically, I argue that social model factors can produce either strong party predisposition, bloc predisposition (e.g., left, right, center), or have no effect at all. The effect of social model factors also determines whether and how much influence the short-term factors will have on the voter's decision to switch parties. Those voters for whom the social model produces strong party predisposition would have the highest immunity to short-term factors.Those voters who have strong bloc predisposition will be somewhat sensitive to short-term considerations when choosing a party within a particular bloc. The voters whose choice is not determined by the social model will be mostly driven by short-term factors. This research advances the new conceptualization of these three types of votersparty-aligned, bloc-aligned, and de-aligned. Party-aligned voters are less likely to switch, bloc-aligned may switch parties, but only within one political bloc, and de-aligned voters are most likely to switch parties and blocs between the elections.