Party Competition: An Agent-Based Model by Michael Laver, Ernest Sergenti

By Michael Laver, Ernest Sergenti

Party pageant for votes in unfastened and reasonable elections consists of complicated interactions via a number of actors in political landscapes which are regularly evolving, but classical theoretical methods to the topic go away many very important questions unanswered. right here Michael Laver and Ernest Sergenti supply the 1st accomplished remedy of celebration festival utilizing the computational recommendations of agent-based modeling. This interesting new expertise permits researchers to version pageant among a number of various political events for the aid of citizens with extensively various personal tastes on many various concerns. Laver and Sergenti version get together pageant as a real dynamic method during which political events upward push and fall, a technique the place assorted politicians assault an analogous political challenge in very alternative ways, and the place latest political actors, missing ideal information regarding the capability effects in their offerings, needs to continuously adapt their habit to yesterday's political outcomes.

Party Competition exhibits how agent-based modeling can be utilized to safely mirror how political platforms quite paintings. It demonstrates that politicians who're chuffed with quite modest vote stocks usually do higher at successful votes than opponents who seek without end for greater stocks of the vote. It unearths that politicians who pay shut awareness to their own personal tastes whilst environment occasion coverage usually have extra luck than competitors who concentration exclusively at the personal tastes of citizens, that a few politicians have idiosyncratic "valence" benefits that increase their electability--and a lot more.

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Extra resources for Party Competition: An Agent-Based Model

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However we have seen that, when we add more parties and more salient policy dimensions and consider the dynamics of electoral competition, the resulting models of dynamic party competition are analytically intractable. Crucially, they are intractable for real voters since it is not possible formally to “solve” for party policy positions and consequent election results, conditional on a profile of voter preferences. This makes strategic voting, in the classical sense, infeasible. The problem of designing an effective strategic voting rule runs much deeper than analytical intractability of dynamic multiparty competition.

2 Precluding infinitely extreme voters thus implies that densities of voter ideal points asymptotically approach zero in every direction as policy positions become more extreme. This implies distributions that are in this sense “bell shaped,” at least at the extremes. We show in the appendix to this chapter that normal distributions of voter ideal points do not have to be imposed as “brute force” assumptions but may evolve endogenously on the basis of standard models of social interaction. The justification for assuming normal distributions of voters’ ideal points is not purely theoretical.

2005; AustenSmith and Banks 2000, 2005). The conclusion that attracted most attention to Downs’ book, especially from scholars with an interest in the United States, was that, if only one dimension of policy is important and if there are only two disciplined vote-seeking political parties, then these parties will both tend to offer policy positions that approach the “center” of this policy dimension, seen as the preferred policy position of the median voter. More than fifty years of sustained intellectual effort has extended and refined this simple model in many different ways.

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