A metric used in NBA basketball that is similar to Field Goal Percentage, but adds an additional parameter.
2. (Government, Politics & Diplomacy) politics. a. the middle of a term of office, esp of a presidential term, when congressional and local elections are held. b. (as modifier): midterm elections.
FYI - A primary election (nominating primary), also referred to simply as a primary, is an election in which voters in a jurisdiction select candidates for a subsequent election. In other words, primary elections are one means by which a political party nominates candidates for the following general election.