Electoral systems contribute to party representation in parliament by determining how votes translate into seats. Different systems, such as proportional representation or first-past-the-post, influence the number of parties that can gain representation and the overall political diversity. Proportional representation typically allows for broader representation of smaller parties, promoting multi-party systems, while first-past-the-post tends to favor larger parties, often leading to two-party dominance. The chosen electoral system can significantly impact legislative behavior, coalition-building, and voter engagement.