Referendum

Noun

 * 1) A direct popular vote on a proposed law or constitutional amendment
 * 2) A note from a diplomat to his government requesting instructions

Thesaurus
Australian ballot, Hare system, aye, ballot, by-election, canvass, canvassing, casting vote, caucus, closed primary, congressional election, constitutional referendum, contested election, counting heads, cumulative voting, deciding vote, direct initiative, direct primary, division, election, enfranchisement, facultative referendum, fagot vote, franchise, general election, graveyard vote, hand vote, indirect initiative, initiative, list system, mandate, mandatory primary, mandatory referendum, nay, no, nonpartisan primary, nontransferable vote, open primary, optional primary, partisan election, plebiscite, plebiscitum, plumper, plural vote, poll, polling, preference primary, preferential voting, presidential election, presidential preference primary, presidential primary, primary, primary election, proportional representation, proxy, recall, record vote, representation, right to vote, rising vote, runoff, runoff election, runoff primary, say, secret ballot, show of hands, single vote, snap vote, statutory referendum, straw vote, suffrage, transferable vote, viva voce, voice, voice vote, vote, voting, voting right, write-in, write-in vote, yea, yeas and nays, yes