People hold a banner reading "No Green Pass" during a protest in Rome on Friday October 15.
Rome CNN  — 

Romans are voting in a run-off election to decide the Italian capital’s next mayor – with a center-left or center-right candidate vying for the post.

The center-right candidate, radio host and lawyer Enrico Michetti, is backed by an alliance of the far-right Fratelli d’Italia (FdI), Matteo Salvini’s right-wing Lega party and center-right Forza Italia.

History professor and former finance minister Roberto Gualtieri is the candidate for the center-left Partito Democratico (PD).

The run-off – taking place Sunday and Monday – comes after there was no outright winner in polls two weeks ago.

Last week, the granddaughter of Italian fascist leader Benito Mussolini, Rachele Mussolini, won a second term as a city councilor in Rome in the October 3-4 municipal election.

Standing for Fratelli d’Italia, she won more than 8,200 votes – the highest number of votes for any candidate – and a huge increase on the 657 votes she received in the 2016 ballot.

Fratelli d’Italia, descends from the neo-fascist conservative MSI party – or Italian Social Movement party – and is led by Giorgia Meloni.

Polls close at 3 p.m. local time (9 a.m. ET) on Monday.

The run-off comes amid political tensions over the country’s new “Green Pass” that mandates all workers are either double vaccinated or able to show proof of a negative Covid-19 test or recent recovery.

Protests erupted and turned violent in Rome on October 9 over the pass, which came into force on Friday. It is the strictest such mandate for workers in Europe.

On Saturday, a rally against fascist movements was held by Italy’s national trade unions in the city’s San Giovanni square.