In 2006, Guinn declined to endorse Jim Gibbons, the Republican nominee for Governor of Nevada, due to bitter disagreements between the two politicians. Gibbons was one of the more vocal critics of Guinn's tax plan during the 2003 legislative session. Guinn said only that he hoped a Republican would succeed him as governor. Gibbons defeated the Democratic nominee, Dina Titus. Guinn's second term as governor ended on January 1, 2007, due to lifetime term limits established by the Nevada Constitution. His official portrait was painted by artist Michele Rushworth and hangs in the state capitol in Carson City, Nevada.