 Dallas County's post-war growth transformed it from a Democratic Solid South stronghold into a conservative sunbelt county that voted for the Republican presidential candidate in every election from 1952 to 2004, except when Texas native Lyndon B. Johnson successfully ran for a full term as President on the Democratic ticket in 1964.In the 2004 election, Democrats won their first countywide administrative office since 1986 by electing Lupe Valdez to the office of Dallas County Sheriff.The last Democratic countywide administrator was D. Connally elected County Surveyor prior to the office's abolition.