In order to participate in the Nominations stage of this year’s Hugo Awards you must either have been a member of the 2007 Worldcon (Nippon 2007), or you must purchase at least a Supporting Membership in the 2008 Worldcon (Denvention 3) by the end of January. Supporting Memberships are $50 and can be upgraded to Attending Memberships later. You can buy a Denvention 3 membership online here.
This year’s deadline for casting nominating ballots is March 1st. You can find a downloadable ballot or vote online here.