Buenos Aires, Argentina — Argentina’s libertarian President Javier Milei won decisive victories in key districts in midterm elections Sunday, clinching a crucial vote of confidence that strengthens his ability to carry out his radical free-market experiment with billions of dollars in backing from the Trump administration.

Milei’s governing La Libertad Avanza party won over 40% of votes in national elections to renew almost half of the lower house of Congress, according to tallies in local media using numbers from electoral authorities with more than 97% of votes counted.

La Libertad Avanza also swept six of the eight provinces in the vote to renew a third of the Senate. The figures exceeded analysts’ projections for Sunday’s vote.

In comparison, the results showed the left-leaning pop

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