You really don't have to do anything. Once your hub has been chosen as a nominee, anyone browsing the category within which the hub appears will first see a box listing all of the nominated hubs. Using this announcement, people can read the various hubs and vote on which one they feel should receive the award. Yes, this award is given to the hub receiving the most votes. One thing you can do is promote the blog at any social networks to which you belong or at your personal web site. Post a link to the blog and ask people to vote for yours. Anyone can vote and the additional votes of people who aren't members of HP may boost you up to the top.