409 seats in the Chamber of Deputies 23 seats in the Senate
Party
Leader
%
Seats
Chamber of Deputies
ARENA
Artur da Costa e Silva
63.98
277
MDB
36.02
132
Senate
ARENA
Artur da Costa e Silva
56.63
19
MDB
43.37
4
This lists parties that won seats. See the complete results below.
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Parliamentary elections were held in Brazil on 15 November 1966.[1] They were the first elections held after a military coup in 1964. In 1965 the military government of President Humberto de Alencar Castelo Branco dissolved all existing parties, and enacted a new electoral law that effectively limited the number of parties to two — the pro-government National Renewal Alliance (ARENA) and the opposition Brazilian Democratic Movement.
ARENA won a landslide victory, taking 277 of the 409 seats in the Chamber of Deputies and 19 of the 23 seats in the Senate. Voter turnout was 77.2% in the Chamber of Deputies election and 77.3% in the Senate election.[2]
^Dieter Nohlen (2005) Elections in the Americas: A data handbook, Volume II, p173 ISBN 978-0-19-928358-3
^Nohlen, pp194-211
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