Tens of thousands of protesters are set to take to the streets in Caracas today to back opposition leader Juan Guaido's calls for early elections in Venezuela. Guaido is trying to force President Nicolas Maduro out from power so he can set up a transitional government and hold new presidential elections.<br />''   <br />''  International pressure also increased on Maduro to step down. Major European countries have set tomorrow's deadline for Maduro to call snap presidential elections. Failing that, they will join the United States in recognizing National Assembly speaker Guaido as Venezuela's interim president.<br />''   <br />'' Guaido's call for a massive show of popular support coincides with a huge pro-Maduro demonstration. The ruling Socialist party celebrates the 20th anniversary of the rise to power of Hugo Chavez, Maduro's deceased predecessor .<br />''   <br />'' Clashes last week around the country left some 40 people dead, according to the United Nations.<br />''   <br />'' The last 10 days of political upheaval have also exacerbated economic meltdown in Venezuela, which has the world's largest proven oil reserves but has suffered hyperinflation and shortages of basic necessities. The UN says 2.3 million people have fled the country, unleashing a migration crisis in South America.<br />