SecurePoll does not let admins set different voting permissions for partially and fully blocked users. This is not desirable because there are reasons partially blocked could be allowed to vote in an election but not fully blocked users. For context, partial blocks allow a user to be blocked from a given set of pages or a given namespace. Sitewide blocks on the other hand block a user from the entire website.
Mock & Requirements
- Remove existing option for  Must not be blocked
- Add a header for "Don't allow the following groups to vote:" after the Registered before option
- Add options for:
- Sitewide blocked
- Partial blocked
Sitewide is checked by default(See T277566 instead)