Romanian authorities have barred far-right pro-Russian candidate Calin Georgescu from taking part in May's rerun of a cancel led presidential election, prompting him on Monday to say he would challenge the decision at the Constitutional Court.

Romanian far-right populist Calin Georgescu has appealed the decision to bar him from running in the country’s presidential election rerun.

Former Romanian Prime Minister Victor Ponta joined the race for May's presidential election re-run on Wednesday, throwing the contest wide open after pro-Russian far-right candidate Calin Georgescu was barred from running.