Centre-left Robert Golob and rightwing populist Janez Janša are frontrunners in contest after polarised campaign

Campaigners in Slovenia have warned of a surge in anti-Romany rhetoric as the country heads to the polls on Sunday, leaving many bracing for the outcome of a vote that has become, in part, a referendum on how the country treats its most marginalised.

In Sunday’s vote, the prime minister, Robert Golob, of the centre-left Freedom Movement party, faces off against the rightwing populist and Donald Trump ally Janez Janša.

Polls suggest Janša’s Slovenian Democratic party has a narrow lead, though neither candidate appears likely to secure a majority in the country’s 90-seat parliament.

In the months leading up to the elections, much of the focus has been on accusations of graft and access to public services, including health care.