Vice President Kamala Harris, now the Democratic Party’s leading presidential candidate, said Sunday she will work to “earn and win” the nomination after President Joe Biden’s historic decision to pull out of his re-election race. In under twenty-four hours she has managed to secure the almost unanimous endorsement of House and Senate Democrats, Democratic governors, and a cash haul reportedly of over $75 million. In the weeks after Biden’s damaging debate performance, critics demanded he prove he had the mental and physical capacity at 81 to continue the race and win the election. But even af…