Evo Morales, Bolivia’s popular leftwing president, has ended his campaign for a new constitution ahead of Sunday’s national referendum with promises of “democratic revolution” and a new era of equality for the volatile Andean nation.

At a rally in La Paz, thousands of supporters waved the multicoloured check flag of indigenous people and chanted “Evo, yes!” beneath a giant inflatable figure of Mr Morales in a trademark striped woollen jumper.