Nominations are open until 2359 on September 23.
You can nominate someone or self-nominate by sending an email to: firstname.lastname@example.org with:
Name of nominee
Nominee’s country of residence
Nominee’s organisation or employer
Nominee’s email address
Motivation for nomination
Name of nominating individual
Nominator’s organisation or employer
More details on both the nomination process as well as the elections are on the RIPE site.