It was convenient that Key was photogenic and media friendly. He listened, he was available, he shared (sometimes too much). He lucked into a period in history where we wanted to take selfies. We laughed at and with him. But that's not what made him prime ministerial.
The 2011 election was Key's first test as a leader after five years at the helm of the National Party. He gained his leadership experience through crisis management on the job, dealing with the GFC, the Pike River disaster, the Rena disaster, and the Canterbury earthquakes. A less experienced Phil Goff was on a hiding to nothing leading the Labour Party into the 2011 election, but if he had hung in there until 2014 he would have had six years as opposition leader just like Clark and the 2014 election would have been a closely fought election. Instead Key was up against yet another rookie in Cunliffe, another man with no experience of party leadership and 12 months to prove himself. It wasn't nearly enough.
Had Key still been Prime Minister National would win 2017. Early deciding voters are strongly supporting National, the economy is strong and Key was up against two inexperienced leaders in Andrew Little and James Shaw.
While Key's announcement that he would be stepping down from the leadership took us by surprise on Monday, it is not a surprise that he has decided to leave just before election year. It's enough time to leave an experienced successor to prove they can take over the helm. It's not enough time for an inexperienced successor. Which is why with the short amount of time available before next year's election, there is only one member of the National caucus who has the experience to attempt to fill the gap. And that's Bill English.
Some are talking English down as the leader who led National to its worst defeat in 2002. But a little perspective is needed. Clark was experienced, while English had been National leader for only nine months. Labour was well ahead in the polls a year out from the election. It had been in government for only three years and there was no mood for change. Any rookie leader would have suffered the same loss as English in that situation. Even Key.
Of all the candidates standing English is the only one to have led the National Party, the only one to have been Acting Prime Minister, the only one to have shared the decision making with Key in those times of crisis, to have made the economic decisions that underlie this Government's policies, and the only one to have more leadership experience that Little and Shaw.
To try for a fourth term is defying the pull of the tide. This is not the time to pass leadership to a rookie who has never captained such a large tanker before.
Professor Claire Robinson is a Massey University expert in political leadership and election campaigning.