Because Goldwater had done well in the Deep South, delegates to the 1968 Republican National Convention included more Southern conservatives than in past conventions. There seemed potential for the conservative Reagan to be nominated if no victor emerged on the first ballot. Nixon narrowly secured the nomination on the first ballot, with the aid of South Carolina Senator Strom Thurmond, who had switched parties in 1964. He selected dark horse Maryland Governor Spiro Agnew as his running mate, a choice which Nixon believed would unite the party, appealing to both Northern moderates and Southerners disaffected with the Democrats. Nixon's first choice for running mate was reportedly his longtime friend and ally Robert Finch, who was the Lieutenant Governor of California at the time. Finch declined that offer, but accepted an appointment as the Secretary of Health, Education, and Welfare in Nixon's administration. With Vietnam a key issue, Nixon had strongly considered tapping his 1960 running mate, Henry Cabot Lodge Jr., a former U.S. senator, ambassador to the UN, and ambassador twice to South Vietnam.