Check the bottom of the page, you will see a box that say the requests that are active.
Users are allowed to nominate themselves, but they are not allowed to vote for themselves. Users may vote once on each nomination, and will last until when expiry date comes or you are blocked. It can also end if Bureaucrats think that you have a problem.
How to elect
Anyone can vote, simply turn into source mode, add (You may need to highlight the text in that box to see the writing)