Hungary is set to vote in a referendum on whether to accept mandatory EU quotas for relocating migrants. <br/><br/>Right-wing Prime Minister Viktor Orban opposes plans to relocate a total of 160,000 migrants across the bloc. <br/><br/>Under the scheme, announced after last year's migrant crisis, Hungary would receive 1,294 asylum seekers.<br/><br/>Opinion polls suggest strong support for a rejection among those who say they will vote. To be valid, turnout needs to be over 50 per cent of voters. <br/><br/>During the migrant crisis, Hungary became a transit state on the Western Balkan route to Germany and other EU destinations. <br/><br/>In an effort to curb the influx, it sealed its border with Serbia and Croatia. The measure was popular at home but criticised by human rights groups.