Comparison of  the current First-Past-The-Post (FPTP) system, the proposed AV system,
and the ProFirst (Proportional FPTP) proposal, each applied to the 2010 UK election counts
Country Current FPTP system Proposed AV system ProFirst (PFPTP) system
E N G L A N D Votes under FPTP Seats won (i.e. voting power in the House under the current FPTP system) Votes under AV Seats won (i.e. voting power in the House under the proposed AV system) Seats       won Winning parties' actual total poll figures        (and therefore also ProFirst voting power at each Division in the House)
Total votes cast Average voting power per MP
No. % No. % No. No. %
Winning parties: Votes used Votes used     Votes used  
Conservative 7,147,127 297 55.8% 6,974,432 278 52.3% 297 9,930,970 42.6% 33,438
Green 16,238 1 0.2% 19,603 1 0.2% 1 258,954 1.1% 258,954
Labour 3,713,630 191 35.9% 4,101,199 197 37.0% 191 7,039,388 30.2% 36,855
Lib-Dem 993,839 43 8.1% 1,329,492 56 10.5% 43 6,075,553 26.1% 141,292
All winning                  candidates 11,870,834 532 100.0% 12,424,726 532 100.0% 532 23,304,865 100.0% 43,806
47.3% of all votes cast 49.5% of all votes cast   92.9% of all votes cast
Losing parties: Votes discarded Votes discarded     Votes discarded  
Conservative 2,783,843 - 2,956,538 -   - 0  
Green 242,716 - 239,351 -   - 0  
Labour 3,325,758 - 2,938,189 -   - 0  
Lib-Dem 5,081,714 - 4,746,061 -   - 0  
Other 1,774,749 - 1,774,749 -   - 1,774,749  
All losing                    candidates 13,208,780 -   12,654,888 -   - 1,774,749    
52.7% of all votes cast 50.5% of all votes cast   7.1% of all votes cast
Total votes cast 25,079,614 25,079,614     25,079,614  
100.0% of all votes cast 100.0% of all votes cast   100.0% of all votes cast
AV results based on simulation program AVOTER (AV Operational Testing, Evaluation and Research)