^^^This last paragraph. Read what happened at Arizona State University in Irishpipes thread when they went from 2 to 3 preference parties with disastrous results. 5 of the 11 Chapters did not make quota and a 1/3 of the women SIP'd.
Oh, I see what you mean. I bet PNM's are thinking "I won't put down three, so why bother putting down 2?"