Existing accounts of multi-level elections focus on voters rather than on political parties, but the multi-level arrangement also affects party strategies. Party elites base their voter mobilization strategies in part on the features of each electoral arena, and make decisions about how to allocate their resources across these arenas accordingly. Small parties, in particular, focus their mobilization efforts on electoral arenas in which the electoral rules are more permissive, so that the parties have a better chance of winning seats. This chapter shows that larger or more nationalized parties tend to make different choices with respect to what kind of potential voters they attempt to mobilize, and for which kind of election, compared with smaller, under-resourced, or regionally based parties.