Complex sentence: The party governed the province from 1871 to 1905,1934 to 1943 and 1985 to 1990, and returned to power in 2003 by winning a majority government in that year's provincial election.
Split into simpler sentences: The party governed the province from 1871 to 1905,1934 to 1943 and 1985 to 1990. It returned to power in 2003 by winning a majority government in that year's provincial election.