# Name Years Size Links
ARENA 1985–2003 51.6%
CDU 2000–2003 6.0%
CD 1991–1997 9.5%
FMLN 1994–2003 37.3%
PAR 1964–1966 7.7%
PCN 1964–2003 92.5%
PDC 1964–2003 8.6%
PPS 1966–1978 7.7%
PRUD 1952–1960 100.0%
UNO 1972–1974 28.8%