Registered voters in Plano can cast their ballots at any polling location in Collin County during early voting and on election day. See the map below for polling locations in Plano. Locations marked in red are open on Election Day, and locations marked in blue are open during the early voting period. Some polling locations are open on both election day and early voting and therefore may overlap on the map. For a full list of polling locations, visit Collin County's elections website.