Romanian far-right politician Calin Georgescu on Tuesday stopped short of endorsing any other potential candidate after being definitively barred from standing in May's presidential election rerun, adding to uncertainty over who would replace him.

A top Romanian court has rejected an appeal by far-right politician Calin Georgescu to lift a ban on his candidacy in the presidential rerun.

Romanian far-right populist Calin Georgescu has lost his appeal against a ruling barring him from participating in May's presidential election. The Constitutional court issued the final ruling on Tuesday afternoon after deliberating for two hours.

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.

Supporters of Georgescu have turned out in droves to protest the efforts to keep Georgescu off the ballot and many have demanded the resumption of the initial elections.

Romania’s constitutional court upheld a decision banning presidential front-runner Calin Georgescu from May election, ending the bid that plunged the country into the biggest political crisis since the fall of communism.

Romania's far right has four days to find a replacement presidential candidate for pro-Russian Calin Georgescu, who is unlikely to succeed on Tuesday in his attempt to overturn a ban on his standing in an election rerun in May.