A worker passes by an electoral graffiti of Venezuelan opposition presidential candidate Henri Falcon, in Barquisimeto, Venezuela, on May 19, 2018 on the eve of the country's presidential election. Venezuela holds presidential elections on May 20, in which Maduro is seeking a second six-year term. / AFP / Luis Robayo 
A worker passes by an electoral graffiti of Venezuelan opposition presidential candidate Henri Falcon, in Barquisimeto, Venezuela, on May 19, 2018 on the eve of the country's presidential election. VeShow more

Maduro favoured as Venezuelans vote amid crisis