Gov. Abigail Spanberger (D-VA) secured a major political victory Tuesday as voters narrowly approved the redistricting referendum she championed, handing Democrats a possible path to winning 10 out of 11 House seats in Virginia.

It was a close race, with 51.5% voting for the measure and 48.6% voting against it. The referendum will let the Democratic-controlled General Assembly temporarily bypass the state’s bipartisan redistricting commission and adopt its own map until the 2030 census.