Microsoft 365 for Campaigns is a new service intended to safeguard election campaigns from bad actors of various kinds. It is part of the Redmond company's Defending Democracy Program, and offers enterprise-level security to those covered by its subscriptions. Currently, it is available for US$5 per user per month.
https://www.notebookcheck.net/New-Microsoft-365-suite-offers-enterprise-level-security-for-political-campaigns.424898.0.html