With the last campaigns only one day in the rearview mirror, Bolivia’s political world has delved into preparations for an unprecedented runoff election that will reveal the extent of a centrist senator’s unexpected traction in the presidential vote.

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.

Early results showed Bolivia's centrist Rodrigo Paz in a surprise lead in Sunday's presidential race, with a likely second round needed against conservative former president Jorge Quiroga.View on euro