Polling place asking which party you wanted to vote for?

[an-art-worker.livejournal.com]

Hi - I voted at Dilboy and they asked me who I was going to vote for (in order, I guess to give me a red or blue ballot). I was a bit taken aback since I can't recall ever having been asked before. The people at the desk said they didn't know why they were asking- they just asked and marked down my response. (the blue pill). There was no independent option.

Anyone know what is up with this? A primary thing?