During moderator nominations, a button/link should be added to user pages to show your support for a user to nominate themselves.
Since you can no longer nominate other users for moderator election, it would be nice to have the ability to encourage other users to nominate themselves. I propose a button/link added to users pages that can be clicked by other users. Once clicked a message (similar to the 'you have a new badge') would be displayed to the user on their next login, which would say something like '[User 123] would like to encourage you to run for a moderator position'.
Clicking the banner would take the user to a page where they could either 'Accept' or 'Decline'. If the user accepts they should be taken to the signup page, if they decline they should no longer be pestered by the messages at login.