Back in the old days of show business, Neil Patrick Harris would have been known as a 'song and dance man.' He's almost like a one-person variety show. He can act, he can sing, he can produce, he can direct - he can do it all! But he also has one more potentially transferable skill which would be useful to the office of President - he's a qualified magician.
A dose of magic when you're involved in politics would certainly be helpful. It sometimes feels like you need a magic touch to strike a deal which nobody else can, or achieve a result that other people don't think is possible. To be cynical, the skill all magicians have - misdirection - is also a great one for a politician. Nobody notices the less pleasant things you do when you've made all of them look the other way. The star of 'How I Met Your Mother' could one day be appearing in a show called 'How I Became President'.