2006Final results
2006 election for Oklahoma Governor
Governor · Oklahoma
Brad Henry (D) won with 66.5% of the vote, defeating Ernest Istook (R) by 33.0 points.
Brad HenryDemocrat · winner
66.5%616,135
Ernest IstookRepublican
33.5%310,327
926,462 votes
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET
The seat over time
D − R margin in this seat's races around 2006
Races before and after
Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse)Updated Oct 5, 2026, 12:23 AM ET