Like I said in another thread, all of these proposed changes that break up the electoral votes of states, either by PR or by congressional district, would likely have the effect of increasing the relative strength of the smaller states even more, because smaller states (on average) tend to be more homogeneous and provide bigger margins of victory to whoever wins the state. So if you break up the electoral votes of the states, you'll likely see the bigger states giving a larger share of their EVs to the loser of their states than you see in the smaller states. Since, at least at present, the GOP tends to do better in smaller states, these scenarios are likely to give the GOP candidate a slight bonus in the EC over what they get now.
By quintile:
Largest: 4 Bush, 6 Kerry
Second: 6 Bush 4 Kerry
Third : 8 Bush, 3 Kerry
Fourth: 8 Bush, 2 Kerry
Fifth: 5 Bush, 5 Kerry
