Calin Georgescu, the far-right frontrunner in Romania’s presidential vote, has been barred from running in May’s election, in an explosive decision that sparked violence on the streets of Bucharest and came despite pressure from Washington to “listen” to voters’ demands.

Romanian far-right presidential contender Calin Georgescu said on Monday he would challenge a decision to bar him from taking part in an election rerun in May, but analysts said his chances of standing were slim amid fears of Russian meddling.