US Electoral College 2000 under Proportional Representation

Explanation | Results

With the close run election still undecided four days after polling closed, I wondered what would happen if the Electoral College was appointed by proportional representation, rather than on a winner-takes-all basis.

The version of PR I've used is the D'Hondt method. Let me demonstrate by example:
Eggland
8 votes
Blue partyRed partyYellow partyGreen party
Actual vote125,000100,00030,0008,000
Vote divided by 341,66733,33310,0002,667
Vote divided by 525,00020,0006,0001,600
Vote divided by 717,85714,2864,2861,143
Vote divided by 913,88911,1113,333889
We start by taking the highest vote in the election, 125,000 for the Blue party. That party gets the first seat, and we divide the party's original vote by 3.
Now give the next seat to the highest remaining vote, 100,000 for the Red party.
The third seat goes to 41,667 for the Blue party. After this, we divide the Blue party's *original* vote by 5. Seat four goes to the Red party, and seat five to the Yellow party.
Continuing in the same way, seat six goes to the Blues, seat seven to Red, seat eight to Blue.
The result is that the Blue party has four seats, the Red party three, the Yellow party one, and the Green party none.

In the Electoral College, each state has a number of votes. I've computed the results on two different bases:
(a) that all the College votes are allocated under d'Hondt rules; and
(b) that two College votes go to the state winner, with the remainder of the votes allocated under d'Hondt. This reflects the notional composition of the College, two Senators plus a variable number of Representatives.

In the table, the background colour on the state name represents the winner of the state - either Bush (red) or Gore (blue). The only third party candidate to win College votes was Ralph Nader (Green).

Note that this table was compiled on Saturday November 11 at noon (EST). At the time of writing, the state winners in Florida and New Mexico were still to be confirmed.
 Option AOption B
State (Votes)BushGoreNaderBushGoreNader
Alabama (9)540630
Alaska (3)210300
Arizona (8)440530
Arkansas (6)330420
California (54)2329222302
Colorado (8)440530
Connecticut (8)440350
Delaware (3)120030
Florida (25)1312014110
Georgia (13)760850
Hawaii (4)220130
Idaho (4)310310
Illinois (22)101209130
Indiana (12)750840
Iowa (7)340250
Kansas (6)420420
Kentucky (8)440530
 Option AOption B
State (Votes)BushGoreNaderBushGoreNader
Louisiana (9)540630
Maine (4)220130
Maryland (10)460370
Mass. (12)471381
Michegan (18)9908100
Minnesota (10)451460
Mississippi (7)430520
Missouri (11)650740
Montana (3)210300
Nebraska (5)320410
Nevada (4)220310
New Hampshire (4)220310
New Jersey (15)6905100
New Mexico (5)230140
New York (33)1220111211
North Carolina (14)860950
North Dakota (3)210300
Ohio (21)101011290
 Option AOption B
State (Votes)BushGoreNaderBushGoreNader
Oklahoma (8)530620
Oregon (7)340250
Pennsylvania (23)1112010130
Rhode Island (4)130130
South Carolina (8)530530
South Dakota (8)210300
Tennessee (11)650740
Texas (32)1912120111
Utah (5)320410
Vermont (3)120030
Washington (11)560470
Washington DC (3)030030
West Virginia (5)320410
Wisconsin (11)560470
Wyoming (3)210300
Total26426772732605

So, with a fully proportional Electoral College, Gore's slight victory in the popular vote translates into a slight victory in the College. With a slight bonus for winning a state, though, it's Bush who wins a small overall majority.

Notes: Idaho, Kansas, Rhode Island, South Carolina, and DC split in such a way that the lead candidate picked up the last two seats under pure D'Hondt, and hence didn't gain a seat under the State Winner Takes Two rule (Option 2.)
In Minnesota and Ohio, Nader and Gore took the last two Option 1 seats, and give these to Gore (Minnesota) and Bush (Ohio).
Note that Option 2 must produce a 3-0 result in those states with only three College members.
Ralph Nader came very close to taking College votes in other states: he would have taken seat 24 in Illinois (22); seat 17 in New Jersey (15); seat 24 in Pennsylvania (23); seat 13 in Washington State (11).
Gore's 85% vote in Washington DC (3) meant he would have taken the first 5 seats in the capital; Bush would have seat 6, and Ralph Nader seat 10.
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