Opinion polling for the 2013 Philippine Senate election
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Opinion polling (locally known as "surveys") for the 2013 Philippine Senate election is carried out by two major polling firms: Social Weather Stations (SWS), and Pulse Asia, with a handful of minor polling firms. A typical poll asks a voter to name twelve persons one would vote for in the senate election. The SWS and Pulse Asia's surveys are usually national in scope, while other polling firms usually restrict their samples within Metro Manila.