Speaking of Proportionality!

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+[[!meta title="Speaking of Proportionality"]]
+[[!tag politics ge15 fptp electoral-reform]]
+
+One thing that's been noted about this election is the unusual
+disparity in ranges of numbers of votes required to secure seats
+between parties.  To some extent this is because the SNP had a
+"roaring" good election and won 56 out of 59 seats that they contested
+(giving them very little chance to "waste" votes).  On the other side
+UKIP contested an awful lot of seats for very little effect; but here
+I present this figures in a very slightly easier to read form.  Maybe
+later I'll produce an infographic.
+
+For reasons the Speaker, if seeking reelection as Speaker, is
+traditionally regarded as neutral and not contested (in fact both UKIP
+and Green did contest his seat); so I'm taking my base unit as the
+number of votes required to elect one John Bercow - 34,617.  For each
+of the parties who won at least one seat, how many Bercows did it take
+to elect each MP on average?  These figures have been slightly rounded
+for presentation
+
+| Party            | Bercows | [//]: #         |
+|-----------------:|:--------| [//]: # --------|
+| Speaker          |    1    | [//]: #       1 |
+| Conservative     |    1    | [//]: #       1 |
+| DUP              |    ⅔    | [//]: #   0.666 |
+| Green Party      |  33⅖    | [//]: #   33.44 |
+| Labour           |    1⅙   | [//]: #   1.164 |
+| Liberal Democrat |    8¾   | [//]: #    8.72 |
+| Plaid Cymry      |    1¾   | [//]: #    1.75 |
+| SDLP             |    1    | [//]: #    0.96 |
+| SNP              |    ¾    | [//]: #    0.75 |
+| Sinn Fein        |    1¼   | [//]: #    1.27 |
+| UKIP             |  112⅛   | [//]: #  112.12 |
+| UUP              |    1⅔   | [//]: #    1.66 |
+
+[//]: # Alliance 1.78
+[//]: # TUSC 1.05
+[//]: # Other 6.282
+In addition the Alliance Party got 1¾ Bercows and no seat, and the TUSC
+got just over 1 Bercow and no seat.  Other candidates between them got 6¼
+Bercows without any seats.