WASHINGTON — California Democrats facing close races could get an important political boost from Friday’s Supreme Court decision reversing its half-century-old ruling that women have a constitutional right to an abortion. The court’s upending of Roe v. Wade “could give Democrats some help in shoring up their base in certain places, such as in some of the Biden-won districts in California that they are defending and targeting,” said Kyle Kondik, managing editor of Sabato’s Crystal Ball, a nonpartisan political analysis organization. In the state’s 10 most competitive House districts, as defined…