This is such a steal!
If you become a Supporting Member of the 2012 Worldcon (just $50), you not only get to vote in the Hugo Awards, you also get to vote for the location of the 2014 Worldcon, you get reduced membership for the 2013 Worldcon (San Antonio), and you get downloadable copies of the Hugo nominated works!
So you can read all the Hugo-nominated works and then vote for your favorite!
Act now, the voting deadline for the Hugos is July 31st!
Be sure to choose “Supporting” membership — unless you’d like to go to the convention, too!