HONG KONG—Select Hong Kong residents voted for members of the Election Committee that will choose the city’s leader in the first polls Sunday following reforms meant to ensure candidates with Beijing loyalty. The Election Committee will select 40 of 90 lawmakers in the city’s legislature during elections in December, as well as elect the Hong Kong leader during polls in March next year. In May, the legislature amended Hong Kong’s electoral laws to ensure that only Chinese Communist Party (CCP) approved “patriots”—people who are loyal to the one-party rule of the former British colony—will rule the city. The committee also was expanded to 1,500 members, from 1,200, and the number of direct voters for committee seats was reduced from about 246,000 to less than 8,000. The restructured electoral process guarantees a vast majority of the Elections Committee will be largely pro-Beijing candidates, who are likely to choose a chief executive …