DUTCH Prime Minister Mark Rutte lost his majority in the senate after the anti-immigration Forum for Democracy surged in elections just days after the Utrecht tram attack.

The right-wing party slammed Mr Rutte’s immigration policies as they appeared on course to win the most votes, giving it the same number of seats as Mr Rutte’s party.

Forum for Democracy leader Thierry Baudet said: ”Successive Rutte governments have left our borders wide open, letting in hundreds of thousands of people with cultures completely different to ours.”

He claimed the vote for seats in the Netherlands upper house exposed the arrogance of the country’s mainstream political parties.

“We are standing in the rubble of what was once the most beautiful civilization in the world,” he said.

The Green Left party also gained in the nationwide poll, taking nearly a quarter of the vote in Amsterdam.

Both parties will be looking for support from other groupings with fears that Mr Baudet may ally with Geert Wilders’s anti-Islam Freedom Party.

Anger has grown over government austerity policies which have been implemented since 2010.

Mr Rutte — whose coalition dropped from 38 to 31 seats — said he would seek support from “constructive parties” on either the left or the right in order to pass legislation.