Where does “кандидатка” come from?

кандидатка (Bulgarian) comes from Russian кандида́т, from Polish kandydat, from German Kandidat, from Latin candidātus, from Latin candidus, from Latin candeō, from Proto-Italic kandēō, from Proto-Indo-European kand- — to shine, glow.

Ancestry of “кандидатка”, step by step

StepLanguageWordMeaning
1Russianкандида́тcandidate (person running in an election)
2Polishkandydatcandidate
3GermanKandidatcandidate
4Latincandidātusdressed in white
5Latincandidusshining white; clear, bright; fair, beautiful
6Latincandeōto be brilliant, glittering or illuminated; to shine, glitter, glisten; gleam white
7Proto-Italickandēō
8Proto-Indo-Europeankand-to shine, glow
Every word from Proto-Indo-European kand-Every word from Proto-Italic kandēōEvery word from Latin candeō