For more than three decades, the same name has anchored the ballot for the congressional district that runs through Bushwick, Williamsburg, Greenpoint, Fort Greene, and across into Ridgewood, Sunnyside, and Long Island City: Nydia Velázquez. She was first elected in 1992. She is not running again. That means on Tuesday, June 23, the seat is open for the first time in a generation, and most of your neighbors do not know it is happening.