David Koch will be remembered for the political fundraising network he and his brother, Charles, built to promote conservative causes. (Dia Dipasupil/Getty Images)
Republican mega-donor David Koch, who helped pioneer a network of often surreptitious organizations aimed at influencing elections and public policy, leaves behind a legacy of dark-money groups and a volatile political landscape.
Koch, one half of the Koch Brothers along with his older brother Charles, died at age 79, the billionaires’ company, Kansas-based Koch Industries, said Friday. David Koch had stepped away from business and politics in 2018 for health reasons and had previously battled cancer, though the company did not say the exact cause of death.