Political betting markets continue to see President Javier Milei's libertarian La Libertad Avanza (LLA, 'Liberty Advances') as favourites to win a plurality of seats in the upcoming congressional elections on 26 October. Nevertheless, the implied probability of LLA winning a plurality has fallen to its lowest on record, at 56%. This is down from a peak of 90% in mid-August, before the disastrous result for LLA in the Buenos Aires provincial election on 7 September, in which the left-wing Peronists led by provincial Governor Axel Kicillof secured a comprehensive win.
Chart 1. Implied Probability of Winning Most Seats in October Legislative Election, %

Source: Polymarket
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