LA PAZ, Bolivia (AP) — Bolivians headed to the polls on Sunday to vote in presidential and congressional elections that could spell the end of the Andean nation’s long-dominant leftist party and see a right-wing government elected for the first time in over two decades.

The election on Sunday is one of the most consequential for Bolivia in recent times — and one of the most unpredictable.

Even at this late stage, a remarkable 30% or so of voters remain undecided . Polls show the two leading right-wing candidates, multimillionaire business owner Samuel Doria Medina and former President Jorge Fernando “Tuto” Quiroga , locked in a virtual dead heat.

But a right-wing victory isn’t assured. Many longtime voters for the governing Movement Toward Socialism, or MAS, party, now shattered by infi

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