The 1989 Spanish general election was held on Sunday, 29 October 1989, to elect the 4th Cortes Generales of the Kingdom of Spain. All 350 seats in the Congress of Deputies were up for election, as well as 208 of 254 seats in the Senate. An election had not been due until 28 July 1990 at latest, but Prime Minister Felipe González called for a snap election nine months ahead of schedule, allegedly on the need of implementing tough economic measures. González hoped to capitalize on a still strong economy and his party's electoral success in a European Parliament election held in June, after a troubled legislature which had seen an increase of social protest on his government's economic policy and the calling of a massive general strike in 1988.