Poland's electoral commission says the results of a weekend referendum aren't binding because fewer than 8 percent of registered voters took part, far below the 50 percent required for it to be valid.

The commission said Monday that turnout in the balloting Sunday was only 7.8 percent, a record low.

Former President Bronislaw Komorowski set the referendum after a surprisingly poor showing in the first round of the presidential election in May. It was seen as a last-ditch attempt by him to stay in power by giving disgruntled voters the chance to weigh in on issues that seemed of concern to them at the time. He lost anyway.

The three-part referendum asked if Poles wanted changes to the electoral system, the funding of political parties and the tax system.