Well, any of them really, but for example the Total column for 2012 up top, I take it to mean that 25% of the ballots requested thus far are Rs and 30% are Ds. So am I to take it that the rest of the requested ballots are from Indies... or am I completely misreading this?
Ah, I see. It means, I think, that the D ballots that have come in represent x% of the outstanding absentees. But I posted an email on the thread where you can contact the guy directly. What it does show is the RATIO of returned votes, so even if there are lots of indies out there, we still can see how the Rs and Ds are performing.