Polling units refer to specific locations designated for voting in an election. These are usually set up at schools, community centers or other public buildings and are used as a way to ensure that everyone has access to a convenient place to cast their ballot. Poll workers are assigned to each polling unit to manage the process of checking in voters and ensuring that they are able to vote without any issues. The term "polling units" can also refer to smaller geographic areas within a larger voting district, which are used for statistical purposes such as calculating results or determining trends.