<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-1616</journal-id>
<journal-title><![CDATA[Estudios políticos (México)]]></journal-title>
<abbrev-journal-title><![CDATA[Estud. polít. (Méx.)]]></abbrev-journal-title>
<issn>0185-1616</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ciencias Políticas y Sociales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-16162016000300149</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Las circunscripciones electorales en México, 1979-2015. Balance y perspectivas.]]></article-title>
<article-title xml:lang="en"><![CDATA[The constituencies in Mexico, 1979-2015. Between national and state scales]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alarcón Olguín]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma Metropolitana-Unidad Iztapalapa Departamento de Sociología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<numero>39</numero>
<fpage>149</fpage>
<lpage>196</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-16162016000300149&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-16162016000300149&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-16162016000300149&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La intención de este trabajo es reconstruir el desempeño de las circunscripciones electorales y los niveles de competitividad partidaria en México, a partir de un recorrido histórico que permita valorar la evolución de la distritación electoral y el número efectivo de partidos opositores (o índice H Min) como fue estudiado por Juan Molinar (1990). En este caso, el estudio abordará la dinámica de las circunscripciones electorales con que "oficialmente" se ha dividido al país desde 1979 a efecto de observar sus diferencias más relevantes al paso del tiempo en los niveles de representación y distribución de escaños. La pretensión de este ejercicio es valorar la emisión de recomendaciones que permitan definir si el actual modelo de división electoral en el país requiere o no de acciones para mejorar la competitividad electoral dentro de condiciones democráticas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The paper´s main purpose is to evaluate the general performance experienced by the model of electoral regions and the levels of party competitiveness in Mexico. This implies to make an analysis capable on estimating the evolution of electoral districts and the effective number of oppositional parties (it defined as H Min index by Juan Molinar in his contributions).Supported by these theoretical grounds, this paper will study the dynamics of the "official electoral regions" existing since 1979, in order to locate their more outstanding differences across time and their impact on the levels of representation and seats obtained by political parties. Finally, this exercise intends to propose general recommendations in order to improve -or do not- the current model of electoral apportionment, and to guarantee the levels of competitiveness in democratic conditions within the electoral regions as well.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Circunscripciones Electorales]]></kwd>
<kwd lng="es"><![CDATA[Competitividad Electoral]]></kwd>
<kwd lng="es"><![CDATA[Distritos Electorales]]></kwd>
<kwd lng="es"><![CDATA[Sistema político mexicano]]></kwd>
<kwd lng="es"><![CDATA[Elecciones en México 1979-2015]]></kwd>
<kwd lng="en"><![CDATA[Electoral Regions]]></kwd>
<kwd lng="en"><![CDATA[Electoral Competitiveness]]></kwd>
<kwd lng="en"><![CDATA[Electoral Districts]]></kwd>
<kwd lng="en"><![CDATA[Mexican political system]]></kwd>
<kwd lng="en"><![CDATA[Mexican Elections 1979-2015]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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