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A spatial analysis of the XIII Italian Legislature


  • Massimiliano Landi


  • Riccardo Pelizzo


We present a spatial map of the Italian House of Deputies during the XIII Legislature obtained by applying the Poole and Rosenthal methodology to roll call data. We estimate coordinates for almost all the 650 Deputies that were on the Houses floor at the time, and we aggregate them according to parties. We find that voting patters generate basically a two dimensional political space. The first dimension represents loyalty to either the ruling coalition or the opposing one. The second dimension is represented by the European Union. These findings are consistent with the exceptional case of the party Northern League, which at the time did not belong to either coalition, and presented itself as a northern, separazionist, and anti-system party.

Suggested Citation

  • Massimiliano Landi & Riccardo Pelizzo, 2005. "A spatial analysis of the XIII Italian Legislature," Governance Working Papers 22459, East Asian Bureau of Economic Research.
  • Handle: RePEc:eab:govern:22459

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    References listed on IDEAS

    1. Simon Hix & Abdul Noury & Gérard Roland, 2006. "Dimensions of Politics in the European Parliament," American Journal of Political Science, John Wiley & Sons, vol. 50(2), pages 494-520, April.
    2. Abdul Ghafar Noury & Simon Hix & Gérard Roland, 2005. "Power to parties: cohesion and competition in the European Parliament 1979-2001," ULB Institutional Repository 2013/7752, ULB -- Universite Libre de Bruxelles.
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    More about this item


    Italian; spatial map; Legislature; Poole and Rosenthal methodology; Voting; Northern League; European Union;
    All these keywords.

    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
    • C02 - Mathematical and Quantitative Methods - - General - - - Mathematical Economics


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