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Electoral Systems and Party Systems.
A number of other consequences of electoral systems go beyond this primary effect. Some systems encourage, or even enforce, the formation of political parties; others recognize only individual candidates. The type of party system which develops, in particular the number and the relative sizes of political parties in the legislature, is heavily influenced by the electoral system. So is the internal cohesion and discipline of parties: some systems may encourage factionalism, where different wings of one party are constantly at odds with each other, while another system might encourage parties to speak with one voice and suppress dissent. Electoral systems can also influence the way parties campaign and the way political elites behave, thus helping to determine the broader political climate; they may encourage, or retard, the forging of alliances between parties; and they can provide incentives for parties and groups to be broadly based and accommodating, or to base themselves on narrow appeals to ethnicity or kinship ties.