Voting began Sunday in Portugal's snap elections, the third in less than four years, to elect a new government. Voters will cast votes to elect 230 seats, which were allocated in 22 constituencies by the election system that is the d'Hondt method -- appointing seats in parliament among federal states or in proportional representation among parties.

Portugal holds its third election in as many years on Sunday, after Prime Minister Luis Montenegro’s minority government lost a confidence vote in parliament in March. Voting in the nation of about 10.