One of the great surprises of 2018 Mexican election was not the largely predicted landslide victory of Andrés Manuel López Obrador but the commanding performance of his political party, Morena. In just its second federal election, Morena won a vast legislative majority in the federal Congress and control of state governments across the country. The party was a relative newcomer on the scene— it was founded just 5 years prior as a civic project of the left. However, in the run-up to the 2018 election, the party ballooned in size, absorbing members from across the political spectrum. Still, Morena was able to present itself as …

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