Abigail Spanberger, a Democrat and former Virginia congresswoman, has for months been favored over her Republican opponent, Winsome Earle-Sears, the current lieutenant governor. But a texting scandal involving the Democratic candidate for attorney general has added a degree of unpredictability in the race’s final weeks.

With Virginia voters heading to the polls to decide key statewide races Tuesday, election officials say unofficial results could come soon after polls close — but tight races may take until tomorrow to call.