Democratic strategists and organizers are hoping that if presidential nominee Kamala Harris defeats her GOP rival Donald Trump in November, she will be blessed with Democratic majorities in both houses of Congress — which would mean flipping the U.S. House of Representatives while holding their narrow majority in the U.S. Senate. If Harris wins, she would have a much easier time getting cabinet and judicial nominees confirmed with the Senate under Democratic control. But Republicans need only a net gain of two seats in order to flip the Senate, which will happen if Sen. Jon Tester (D-Montana) …