Republican Senator Pete Domenici of New Mexico, has been mentioned as a potential pick for Secretary of Energy in a McCain administration. However according to Grist, a couple things may stop that from happening.
Right-wingers who still challenge global warming, or at least linking it to human activities, say they don't have a glacier's chance in hell of being heard in a McCain administration on energy. But if they did, they'd pick Sen. Pete Domenici (R-N.M.) to lead the Department of Energy. Domenici, New Mexico's retiring elder statesman, is a backer of nuclear power who's a favorite among conservatives and industry groups, but they acknowledge he probably wouldn't get the nod. Politically, Domenici's tangential involvement in the U.S. attorneys firings wouldn't help him win confirmation, but more practically, he announced last year that he's suffering from a degenerative brain disease.
From Pete Domenici's bio:
First Republican in 38 years in New Mexico to be elected to U.S. Senate, 1972.
With re-election in 2002, Domenici became the first New Mexican elected to serve six full six-year terms in the Senate.
Domenici has served longer in the U.S. Senate than any other New Mexican in history.