Upon re-reading, given the rounding I think if Romney doesn’t make 20% and Santorum stays over 52, the 25 will be split 14-5-4 (if Newt stays under 16) and 2 to Paul. The rounding rules really hurt whoever finishes towards the end, but if Romney makes it to 20, cutting Santorum down to 50, then Santorum gets 18 and Romney gets 7.
Johnson County’s seven precincts are in—Romney is now at 20.9 and Santorum is down to 51.4%—I think that given the strange rules, this is good news for Romney and better news for Santorum.