WASHINGTON — Nowhere is gender politics thicker in the election season air than in the mannerly U.S. Senate as it considers what President Donald Trump’s choice for the Supreme Court, Brett Kavanaugh, did or didn’t do in high school. Christine Blasey Ford’s accusation of sexual assault — and Kavanaugh’s staunch denial — has ignited a tense, gender-infused war among the Senate’s 100 members, 23 of whom are women. Whether Kavanaugh and Ford testify under oath, and to what details, has enormous stakes for President Donald Trump and the Nov.