Romania’s largest opposition party threw its support behind the poll-leading pro-Russian politician whose shock victory in last year’s presidential election prompted authorities to invalidate the result.

Romanian far-right pro-Russian presidential candidate Calin Georgescu remained voters' top choice ahead of a re-run of a presidential election in May, an opinion survey showed late on Monday. The survey comes one month after the European Union state's top court annulled the presidential election in which Georgescu was the frontrunner two days before the second round,