Venture capitalist Ben Horowitz said on Friday he will make a “significant donation” to entities supporting the Democratic presidential campaign of Vice President Kamala Harris who faces Republican former President Donald Trump in the November. 5 election.The co-founder of venture capital firm Andreessen Horowitz had thrown support behind Trump in July. At the time he backed Trump, President Joe Biden was the Democratic candidate. Biden later stepped aside in the aftermath of a disastrous debate against Trump