Finally, female candidates need to be elected to parliament by voters. Studies of national elections in various established democracies suggest that women, once nominated, tend to do as well as men in parliamentary elections. This is partly due to the fact that in countries which have developed party systems, the voters vote primarily for the party label rather than for individual candidates. Nevertheless, electoral systems differ on the voters’ possibilities to choose not only between political parties, but between individual candidates as well. This may have an impact on the election of women. Furthermore, gender quotas may play an important role for women being elected to parliament if they contain provisions for the ranking order on the parties’ lists.