I’m assuming this is a Democrat cuz no mention of political party?
Louis Presta.
Two different sources list both. One says he is a Republican:
https://southcooknews.com/stories/543301396-dwayne-mcgill-donates-2-500-to-louis-presta-s-election-campaign
This one says he’s a Dem:
https://m.chicagolabor.org/take-action/body/3.20.18PrimaryEndorsementList2.11.18.pdf