A person who backs a politician or a team etc..

synonyms: booster, champion, friend, protagonist, supporter.

Dutch: supporter
Polish: stronnik

A person who admires; someone who esteems or respects or approves.

Someone who admires a young woman:
— She had many admirers.

synonym: adorer.

Roget 897: love; fondness etc. adj.; liking; inclination etc. (desire) 865; regard, dilection^†, admiration, fancy.    affection, sympathy, fellow-feeling; tenderness etc. adj.; heart, brotherly love; benevolence etc. 906; attachment.    yearning, eros, tender passion, amour; gyneolatry^†; gallantry, passion, flame, devotion, fervor, enthusiasm, transport of love, rapture, enchantment, infatuation, adoration, idolatry.    Cupid, Venus; myrtle; true lover's knot; love token, love suit, love affair, love tale, love story; the, old story, plighted love; courtship etc. 902; amourette^†; free love.    maternal love, storge [Gr.], parental love; young love, puppy love.    attractiveness; popularity; favorite etc. 899.    lover, suitor, follower, admirer, adorer, wooer, amoret^†, beau, sweetheart, inamorato [It], swain, young man, flame, love, truelove; leman^†, Lothario, gallant, paramour, amoroso^†, cavaliere servente [It], captive, cicisbeo^†; caro sposo [It].    inamorata, ladylove, idol, darling, duck, Dulcinea, angel, goddess, cara sposa [It].    betrothed, affianced, fiancee.    flirt, coquette; amorette^†; pair of turtledoves; abode of love, agapemone^†.    ... show more

Dutch: aanbidder, bewonderaar, vereerder
Polish: adorator, amant, wielbiciel