(Salem, OR) -- A group of ten Republican and Independent state senators have continued their walkout for a 15th straight day, preventing a quorum and stopping the Senate from taking any action on bills. They're opposed to Democrat-backed bills they say are too extreme or unconstitutional. The senators are in violation of Ballot Measure 113, which means they can't run for re-election, because they have more than 10 unexcused absences. They plan to challenge the new law in court. Governor Tina Kotek met with both sides on Monday, but couldn't reach an agreement to end the walkout. Republicans released a statement saying they will return on June 25th to pass key budget bills before the legislative session ends.