Nonpartisan blanket primary
A nonpartisan blanket primary is a primary election in which all candidates for the same elected office run against each other at once, regardless of the political party. Partisan elections are, on the other hand, segregated by political party. Nonpartisan blanket primaries are functionally identical to the two-round system, with the caveat that the first round is officially the "primary." Round two is the "general election." Round two must be held, even if one candidate receives a majority in the first round.
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