First recorded in 1605-15,candidate is from the Latin word candidātus clothed in white (adj.), candidate for office (noun, in reference to the white togas worn by those seeking office). See candid, -ate1
[kan-di-duh-see] /ˈkæn dɪ də si/ (Show IPA). Chiefly British, candidature
[kan-di-duh-cher] /ˈkæn dɪ də tʃər/ (Show IPA), candidateship, noun
c.1600s, from Latin candidatus "one aspiring to office," originally "white-robed," past participle of candidare "to make white or bright," from candidus (see candid). Office-seekers in ancient Rome wore white togas.