Colorado Amendments Y and Z, which will change who determines how political district boundaries are drawn, both passed on Tuesday.

The amendments leave the task of determining congressional and state political districts to independent commissions instead of the Colorado legislature.

As of 8:20 p.m., Colorado voters approved Amendment Y, which pertains to congressional districts for the U.S. House of Representatives, with 71 percent of the vote. Amendment Z, which pertains to state house and senate races, also passed with 71 percent of the vote.

Under the amendments, district boundaries, drawn by independent legislative staff, will have to be approved by a tri-partisan commission of four Republicans, four Democrats and four voters unaffiliated with a political party review them. Eight of the 12, which must include two unaffiliated voters, must vote to approve the map.

Commission members will come from all of the state’s congressional districts. Half will be randomly selected, and the other half will be picked by a panel of judges who weigh things like the candidate’s gender and geographic, political and ethnic backgrounds.

The amendments required at least 55 percent approval to pass because they would amend the Colorado constitution.

The redistricting commission won't be seated until after the 2020 census.

BACKGROUND:Amendments Y, Z seek to balance party influence on district mapping process