Open the frame in its own page (or just click here) and open up the page's source code. Scroll about a quarter of the way through, and you'll see some lines of code which look like this:
var totalNumVotes = eval(totalOpinioVotes)+eval(totalCommentsCount) ;
document.getElementById('totalNumVotes').innerHTML = totalNumVotes + totalVotesText ;
As I make this post, the numbers stand as 176257 votes for givens and 387731 votes for write-ins.
You know how NASA is setting up the poll so it looks like Serenity is way out in front with 3/4ths of the vote? It's almost certainly not. Serenity has 75% of 176257 or about 132193 votes. A write-in suggestion can beat that with 35% of the write-in votes.
A side note: I talked to Dr. Tyson this evening, and I asked him about the Node 3 effort. He responded by saying that he wished Colbert would mobilize his viewers more productively, like to lobby Congress for increased NASA funding.
[Disclaimer: THIS INFORMATION IS FOR EDUCATIONAL PURPOSES ONLY. Please don't actively try to ruin or tamper with the poll.]