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Strategic Mobilization: Why Proportional Representation Decreases Voter Mobilization.

Strategic Mobilization: Why Proportional Representation Decreases Voter Mobilization.

Carlisle Rainey

August 29, 2014
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  1. Strategic Mobilization
    Why Disproportional Districts Encourage Partisan
    Mobilization Efforts
    Carlisle Rainey!
    Assistant Professor
    University at Buffalo (SUNY)
    [email protected]
    @carlislerainey
    paper, data, and code at
    crain.co/stratmob

    View Slide

  2. “With proportional representation from the nation
    as a whole or from large electoral districts, parties
    have an incentive to mobilize everywhere. With
    single member districts some areas may be
    written off as hopeless.”
    –Powell (1982, p. 21)

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  3. incentive to mobilize everywhere
    proportional representation

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  4. incentive to mobilize everywhere
    proportional representation
    no
    any

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  5. View Slide

  6. View Slide

  7. View Slide

  8. View Slide

  9. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    Proportional
    Competitive

    Plurality
    !

    View Slide

  10. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0%
    Proportional
    Competitive

    Plurality
    !

    View Slide

  11. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0%
    Proportional 20% 20%
    Competitive

    Plurality
    !

    View Slide

  12. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0%
    Proportional 20% 20%
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  13. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22%
    Proportional 20% 20%
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  14. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0%
    Proportional 20% 20%
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  15. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20%
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  16. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22%
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  17. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22%
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  18. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22% Yes
    Competitive

    Plurality
    49% 0%
    !

    View Slide

  19. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22% Yes
    Competitive

    Plurality
    49% 0% 51%

    View Slide

  20. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22% Yes
    Competitive

    Plurality
    49% 0% 51% 100%

    View Slide

  21. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22% Yes
    Competitive

    Plurality
    49% 0% 51% 100% Yes

    View Slide

  22. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22% Yes
    Competitive

    Plurality
    49% 0% 51% 100% Yes

    View Slide

  23. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% No
    Proportional 20% 20% 22% 22% Yes
    Competitive

    Plurality
    49% 0% 51% 100% Yes

    View Slide

  24. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0%
    Proportional 20% 20% 22% 22%
    Competitive

    Plurality
    49% 0% 51% 100%

    View Slide

  25. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% 0%
    Proportional 20% 20% 22% 22%
    Competitive

    Plurality
    49% 0% 51% 100%

    View Slide

  26. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% 0%
    Proportional 20% 20% 22% 22% 2%
    Competitive

    Plurality
    49% 0% 51% 100%

    View Slide

  27. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% 0%
    Proportional 20% 20% 22% 22% 2%
    Competitive

    Plurality
    49% 0% 51% 100% 100%

    View Slide

  28. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% 0%
    Proportional 20% 20% 22% 22% 2%
    Competitive

    Plurality
    49% 0% 51% 100% 100%

    View Slide

  29. District
    Current
    Vote Share
    Current
    Seat Share
    Vote Share

    if Mobilize
    Seat Share

    if Mobilize
    Gain
    Non-Competitive
    Plurality
    20% 0% 22% 0% 0%
    Proportional 20% 20% 22% 22% 2%
    Competitive

    Plurality
    49% 0% 51% 100% 100%

    View Slide

  30. mobilization

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  31. electoral rules

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  32. competitiveness

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  33. data

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  34. View Slide

  35. View Slide

  36. View Slide

  37. View Slide

  38. View Slide

  39. View Slide

  40. View Slide

  41. incentive to mobilize everywhere
    proportional representation
    no
    any
    paper, data, and code at
    crain.co/stratmob

    View Slide