State Legislative Election Returns, 1967-2016State legislative general election and (some) primary returns (1967–2016) mostly at the district level. Variables include district identifiers, date of election, type of district (Single member (SMD), multimember (MMD), etc.), redistricting status, incumbency status, vote share, uncontested elections, chamber details, and term length. This version of SLERs has been restructured to make the election the unit of analysis.