BUENOS AIRES, Argentina (AP) — Voters across Argentina’s most populous province of Buenos Aires headed to the polls on Sunday to choose lawmakers in an unusually high-stakes local election seen as a referendum on the performance of libertarian President Javier Milei and a bellwether for crucial midterms next month.

The Buenos Aires provincial election is polarized between Milei’s recently formed libertarian party and Peronism , the ideologically flexible populist movement that has held sway in Argentina for decades.

Milei, whose barely 4-year-old La Libertad Avanza party has subsumed much of the center-right , views this a chance to embarrass the Peronist opposition led by former President Cristina Fernández de Kirchner in its historic stronghold.

“These elections will be useful to unde

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