Marcus has been a prominent Democratic donor for the past decade. He was ranked 15th in 2018 among the top campaign contributors in the country, according to the nonpartisan Center for Responsive Politics. During last year's congressional midterm elections, he and his wife, Judith, combined to give more than $9 million to Democrats.
UMarcus ube ngumxhasi ovelele weDemocratic kule minyaka eyishumi edlule. Ubekwe endaweni ye-15 ngonyaka we-2018 phakathi kwabaxhasi  abaphezulu emkhankasweni ezweni, ngokusho kwalabo abangahambisani namaphathizini  kuyiCentre for Responsive Politics. Ngesikhathi sokhetho lwengqungquthela lwanyakenye, yena nomkakhe, uJudith, bahlangana ukunikela ngaphezu kuka- $ 9 miliyoni  kumaDemocrats.