The coolest head I have ever seen on a pair of shoulders is John Key's.
I watched him up close, first, in the aftermath of the Global Financial Crisis and, second, the Canterbury earthquakes.
His was the toughest of jobs. He had the entire country looking to him for guidance, he had limited information, and he had to contend with the pressure cooker of modern news coverage.
Key provided the reassurance and long-term recovery plans that the country needed. He never lost his cool. He has a head for making the big calls. And for making the right ones.
We saw it again with Dirty Politics. That was tough in an election campaign. No one knew what was coming next, the dirt was being dripped out, and the media were baying for blood. Key kept his cool. He is impressive. I hope he's Prime Minister after next Saturday.