The two candidates are diametric opposites regarding adding housing, improving transit, and working with the mayor. And the winner of this race will likely be the deciding vote on such issues in the Board of Supervisors, including the vote for who will be president, a powerful role that gets to appoint nearly half the members of important bodies like the Planning Commission. If you're in this district, please register to vote and read up on Julie Christensen and Aaron Peskin so you can make an informed decision in just over a month.