Sergio Massa

Argentines head to the polls Sunday in a down-to-the-wire race between two wildly different presidential candidates, with many frozen by indecision over which choice will rescue them from triple-digit inflation.

One candidate is Economy Minister Sergio Massa, 51, who has overseen annual inflation of 143 percent and record poverty levels.

 Economy Minister Sergio Massa produced a big surprise by finishing first in the opening round of Argentina's presidential election, reflecting voters' wariness about handing the presidency to his chief rival, a right-wing populist who upended national politics and pledged to drastically diminish the state.

Argentines will choose between far-right lawmaker Javier Milei, center-right coalition candidate Patricia Bullrich and Economy Minister Sergio Massa in this year's presidential vote, according to results from Sunday's primary election.