 Complete the following phrase:  After holding minor posts in centre-right governments, the Moderates eventually became the leading opposition party to the Swedish Social Democratic Party and since then those two parties have dominated Swedish politics. After the 1991 general election, party leader Carl Bildt formed a minority government, the first administration since 1930 to be headed by a member of the party which lasted three years. Under party leader and Prime Minister Fredrik Reinfeldt, the party was returned in government after the 