OSLO, Norway (AP) — On Monday, Norwegians headed to polling stations in a critical election where a historic wealth tax was a focal point during the campaign.

About 4.3 million eligible voters are casting ballots for 169 members of Norway’s parliament, known as the Storting. The race is tight, with the center-left Labor Party, led by Prime Minister Jonas Gahr Støre, facing off against a right-wing bloc.

Official results are expected Tuesday, potentially followed by lengthy coalition negotiations before the new government is sworn in by King Harald.

Norway, a NATO member, is not expected to see drastic changes in foreign policy, being a staunch supporter of Ukraine against Russia and maintaining strong economic ties with the EU.

With immense wealth from oil reserves and one of the largest sovereign wealth funds in the world, Norway's welfare system is generous, promoting egalitarianism.

The Labor Party wants to preserve the wealth tax, which taxes assets above 1.76 million kroner (around $176,000), bringing in about 34 billion kroner ($3.3 billion) annually. Meanwhile, opposing parties, including the Conservatives and the Progress Party, advocate for lowering or eliminating the tax entirely.

Youthful social media campaigns are invigorating younger voters, particularly in favor of the Progress Party, potentially swaying the overall election results.