Here's a case where an endorsement could end up costing the candidate votes.

Global Warming charlatan Al Gore wants Pennsylvania residents to elect Democrat Katie McGinty as governor.

McGinty is one of eight Democrats seeking their party's nomination to run against incumbent Republican Gov. Tom Corbett.

Her ties to Gore go back to the 1980s. McGinty was environmental adviser to Gore's unsuccessful 2000 presidential campaign. Before that, McGinty spent a decade working in Washington, D.C., both in Gore’s Senate office, which she joined in 1989, and for the Clinton White House, most notably as chairwoman of the White House Council on Environmental Quality, according to The Associated Press.

My advice to McGinty: I wouldn't brag too much about Gore's endorsement, especially as Pennsylvania residents are still digging out from all this global warming.

Gore endorses McGinty in Pa. governor's race