CNN data reporter Harry Enten said Monday he would “take a roll of the dice” on Vice President Kamala Harris as a replacement for President Joe Biden on the ballot if he were a Democratic donor. Biden has resisted calls to step aside after a poor performance in a June 27 debate with former President Donald Trump on CNN, during which the president froze and made multiple verbal gaffes. Enten told “CNN Newsroom” host Pamela Brown that Harris performs better with independent voters in polling. “If you take a look at the average of polls, in fact, she does slightly better than Joe Biden against Do…