https://www.nhdp.org/events
If you know someone who might want to receive updates via e-mail I'd suggest they sign-up here:
https://actionnetwork.org/forms/primary-updates-please
If you already favor one or more candidates I'd also advise signing up for their individual e-mail notifications of their events, as they may have the most up to date schedule and have last minute changes listed. They would also be the most likely to have private RSVP events listed that you might want to attend.
