Tens of thousands protested in Romania’s capital on Sunday against a top court’s decision last month to annul the presidential election after an outsider candidate unexpectedly emerged as the frontrunner.

Romanians took to the streets on Friday in support of fringe pro-Russian candidate Calin Georgescu, demanding the country’s top court reverse its decision to cancel a presidential ballot in which he was a frontrunner.

A massive demonstration took place in Bucharest, during which thousands of people demanded a second round of presidential elections. The constitutional court annulled the results of the first round, which triggered the largest protest so far.