Voter Satisfaction in Cambridge 1991-2007
Research have shown that proportional representation promotes voter satisfaction. Robert Winters has collected data from Cambridge elections from 1991-2007, which were all run according to the principles of PR. Winters' research shows that on average over 90% of the Cambridge voters elected their 1st or 2nd choice candidates.

            voter satisfaction    
Election elect candidates valid invalid total #1 elected Pct #1 #2 elected Pct #1 or #2 #3 elected Pct #1,2, or 3 None Pct none Pct blank diff.
1991 Council 9 19 22967 0 22967 18692 81.4 3032 94.6 552 97.0 429 1.9 0.0 1.9
1997 Council 9 19 16879 350 17229 15290 88.7 1279 96.2 248 97.6 278 1.6 0.0 1.6
1999 Council 9 24 18777 384 19161 14658 76.5 3066 92.5 580 95.5 575 3.0 0.0 3.0
2001 Council 9 19 17126 562 17688 14821 83.8 1814 94.0 382 96.2 492 2.8 0.0 2.8
2003 Council 9 20 20080 878 20958 15242 72.7 2985 87.0 841 91.0 1413 6.7 0.0 6.7
2005 Council 9 18 16070 132 16202 12748 78.7 2384 93.4 432 96.1 425 2.6 0.0 2.6
2007 Council 9 16 13633 88 13721 10875 79.3 1919 93.2 374 96.0 399 2.9 0.0 2.9
1997 School 6 8 16386 285 16671 13887 83.3 2191 96.4 197 97.6 395 2.4 0.0 2.4
1999 School 6 13 17961 307 18268 13890 76.0 2746 91.1 605 94.4 859 4.7 0.0 4.7
2001 School 6 10 16489 1160 17649 13443 76.2 2538 90.5 356 92.6 1255 7.1 0.0 7.1
2003 School 6 8 18698 2210 20908 17124 81.9 1635 89.7 58 90.0 2091 10.0 0.0 10.0
2005 School 6 8 15470 719 16189 12534 77.4 2136 90.6 409 93.1 1110 6.9 0.0 6.9
2007 School 6 9 13276 433 13709 10550 77.0 1949 91.2 211 92.7 974 7.1 0.0 7.1

Notes on data:
Voter satisfaction percentages are based on total ballots. These figures include blank ballots that were included in the total. The "diff." field gives the percentage of ballots who elected none with the blank ballots subtracted out. Cambridge election officials are not always consistent in the way they include blank ballots in the totals. Hence the widely varying numbers. The 1991 figures only include valid ballots recorded by data entry. The results may differ slightly from the actual election results.  
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