Bolivian right-wing presidential hopeful Jorge Quiroga on Monday vowed to scrap billion-dollar lithium extraction deals struck by the outgoing government with Russia and China if elected leader.

"We don't recognize (outgoing President Luis) Arce's contracts... Let's stop them, they won't be approved," the US-educated Quiroga, who has vowed a major shake-up in Bolivia's alliances if elected president in October, told AFP in an interview.

Quiroga came second in the first round of Bolivia's August 17 presidential election, behind centre-right senator Rodrigo Paz.

The Movement Towards Socialism (MAS), in power since 2006, suffered a historic rout, with voters punishing the party founded by iconic ex-president Evo Morales over a deep economic crisis.

Quiroga and Paz now face a second-round

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