All the different Montclair slates got you dizzy? Don’t know the difference between Unity and Partnership Montclair? Tonight’s your night to hear the three mayoral candidates and their running mates debate. The League of Women Voters and Montclair PTA Council sponsors the 7 pm event, which takes place at the Montclair High School LGI Room, 100 Chestnut Street. Doors open at 6:30 pm. Come early to submit questions to the moderators.