A major figure in the GOP just sent a “massive signal” to undecided voters that Vice President Kamala Harris is their choice, a former Barack Obama aide said on Saturday. Democratic political commentator Van Jones, a frequent guest on CNN, appeared on the network over the weekend to discuss the state of the presidential race and the upcoming debate during which Harris is set to face off against Donald Trump. Jones appeared alongside GOP operative Scott Jennings. Both political strategists were asked about the recent endorsement of Harris by former Vice President Dick Cheney, who stated that Tr…