The surprise frontrunner in Bolivia's presidential elections reportedly had his phone stolen on Sunday while giving a speech to supporters to celebrate his first-round victory. Centrist senator Rodrigo Paz topped Sunday's polls with 32% of the votes cast, although he did not receive a high enough share to secure an outright victory.

Early official result showed the ruling Movement for Socialism (MAS) on track for its worst election defeat in a generation.

Now, on October 19, Bolivians will hold presidential runoff for the first time—an option only introduced in the 2009 Constitution. As voters prepare to pick their next president, AS/COA online looks at dark horse candidate Paz, the collapse of MAS, and the composition of the next national legislature.

Early exit polls in Bolivia's presidential election on Sunday showed Centrist Senator Rodrigo Paz of the Christian Democratic Party leading, with the ruling Movement for Socialism party on track to suffer its worst electoral defeat in a generation.

Bolivians were headed for an unprecedented runoff presidential election following a vote Sunday in which a dark horse centrist, Sen. Rodrigo Paz, drew more votes than the right-wing front-runners, although not enough to secure an outright victory,

Centrist senator Rodrigo Paz was leading Bolivia's presidential election, according to early official results, which showed the ruling Movement for Socialism on track for its worst election defeat in a generation.

STORY: Early official results in Bolivia show the country's ruling leftists on track for their worst defeat in a generation.Instead the electoral tribunal says centrist senator Rodrigo Paz of the Christian Democratic Party is leading the election late Sunday.

A well-known figure in Bolivian politics, Jorge "Tuto" Quiroga, 65, is a conservative candidate representing the Alianza Libre coalition. He briefly served as president from 2001 to 2002 and has worked as an IMF consultant and a mining executive.