In 1983 United Kingdom general election , as a DUP candidate , Seawright finished second with 8,260 votes behind Cecil Walker of the UUP , whilst in 1987 United Kingdom general election he finished third behind Walker and Alban Maginness ( Social Democratic and Labour Party ) with 5,671 votes as a Protestant Unionist candidate ( although the DUP did not contest the seat due to an electoral pact between the DUP and UUP at the time ) .