Bolivians go to polls in election that could end 20 years of leftist rule

Rightwing candidates lead polling ahead of fragmented left amid country's worst economic crisis in four decades

Bolivians are going to the polls in an election that could mark a shift to the right and the end of nearly 20 years of rule by the leftist Movimiento al Socialismo (Mas).

The party, which came to power with the first election of Evo Morales in 2005, risks losing its legal status if it fails to reach 3% of the vote - a threshold it has not hit in polls.