The thing is, Palin's unsuitability for high public office has been obvious all along.
From the washingtonpost.com
Despite her complete unsuitability, the Prince was determined to marry her.
From the en.wikipedia.org
Some may see all that as evidence of unsuitability for his latest role.
From the express.co.uk
Harrison has demonstrated on too many occasions his unsuitability to a prize-fighting career.
From the independent.co.uk
That would be a sure sign of Beckham's unsuitability as both parent and potential Spurs player.
From the sportsillustrated.cnn.com
Given the unsuitability of some species as street trees, why do homeowners continue to plant them?
From the kentucky.com
Cain left no doubt about his unsuitability for the White House.
From the sfgate.com
An editor's note in the online version of the article points out the unsuitability of the recommendation.
From the economist.com
Indeed, Al Gore served a handy reminder of his unsuitability and poor judgment by endorsing Howard Dean.
From the economist.com
More examples
The quality of having the wrong properties for a specific purpose
Recommending investments that are clearly unsuitable for the client. Selling a variable annuity that won't mature until after a client's likely lifespan breaks rules regarding investment suitability