Far-right coalition tipped as kingmaker in Polish election

If neither the ruling party nor Donald Tusk's opposition wins outright on Sunday, the door could open to alliance with Confederation

The big political battle in Sunday's Polish parliamentary election may be between the ruling Law and Justice (PiS) party, seeking a third term in office, and the opposition Civic Platform (PO) led by Donald Tusk, the former prime minister and European Council president.

But with polls suggesting that neither side will have the votes to form a government outright, the decisive say in who rules Poland for the next four years could lie with Confederation, an eclectic far-right coalition of nationalists, libertarians and monarchists.