<Ul> <Li> Bob Iger from California </Li> </Ul> <Li> Bob Iger from California </Li> <P> The individuals in this section have been the subject of speculation about their possible candidacy, but have publicly denied interest in running . </P> <Ul> <Li> Michael Bloomberg, Mayor of New York City, New York 2002--2013 </Li> <Li> Tim Cook, business executive, industrial engineer, and developer from California </Li> <Li> Jeff Flake, U.S. Senator from Arizona since 2013; U.S. Representative 2001--2013 </Li> <Li> John Hickenlooper, Governor of Colorado since 2011; Mayor of Denver 2003--2011 </Li> <Li> Dwayne Johnson, actor, producer, and semi-retired professional wrestler from Florida </Li> <Li> John Kasich, Governor of Ohio since 2011; U.S. Representative 1983--2001; candidate for President in 2000 and in 2016 </Li> <Li> Steve Kerr, professional basketball coach and former player from California </Li> <Li> Gregg Popovich, professional basketball coach from Indiana </Li> <Li> Bernie Sanders, U.S. Senator from Vermont since 2007; U.S. Representative 1991--2007; candidate for President in 2016 </Li> <Li> Joe Scarborough, U.S. Representative from Florida 1995--2001 </Li> <Li> Mark Zuckerberg, computer programmer and Internet entrepreneur from California </Li> </Ul>

When will the presidential candidates for 2020 be announced