Nominators: StorageDescriptor<[Key: SS58String], {
    submitted_in: number;
    suppressed: boolean;
    targets: SS58String;
}, true>

The map from nominator stash key to their nomination preferences, namely the validators that they wish to support.

Note that the keys of this storage map might become non-decodable in case the account's [NominationsQuota::MaxNominations] configuration is decreased. In this rare case, these nominators are still existent in storage, their key is correct and retrievable (i.e. contains_key indicates that they exist), but their value cannot be decoded. Therefore, the non-decodable nominators will effectively not-exist, until they re-submit their preferences such that it is within the bounds of the newly set Config::MaxNominations.

This implies that ::iter_keys().count() and ::iter().count() might return different values for this map. Moreover, the main ::count() is aligned with the former, namely the number of keys that exist.

Lastly, if any of the nominators become non-decodable, they can be chilled immediately via [Call::chill_other] dispatchable by anyone.

TWOX-NOTE: SAFE since AccountId is a secure hash.