New York City’s election for public advocate is Tuesday. It’s happening now because Tish James, who used to hold the seat of city watchdog, just started as the state’s attorney general. But since it’s an off-season special election, it’s nonpartisan. That means even when candidates identify as Democrats or Republicans, those parties aren’t listed on the ballot. Instead, as Ali Swenson reports, candidates write their own party lines — 15 characters or less to convey their campaign’s agenda to voters.