Romania's populist far-right politician George Simion is making his bid for the country’s presidential election rerun in May as he seeks to rally nationalist voters after a controversial frontrunner was barred from the race last year.

Romania's central election authority on Sunday barred far-right pro-Russian candidate Calin Georgescu from running in May's presidential election re-run, a decision likely to deepen a constitutional crisis in the European Union and NATO member.

It’s a close question, given the role of Russia and the tender age of the country’s democracy.