New Canadian prime minister Justin Trudeau waves as he arrives to give his victory speech in Montreal after Canada's federal election. But Chris Trotter says a 2013 photo captured the "magical political moment" that showed he was the one to watch.

OPINION: It's one of those pictures that freeze-frames a political leader in the making. Half-turned from the enthusiastic crowd of Prince Edward Islanders he is addressing, Justin Trudeau's upraised arm acknowledges something beyond the image's point of reference. A pale sunlight lightly gilds the palm of his outstretched hand and highlights the features of his face. Taken in 2013, Canadian Press photographer Andrew Vaughan's photograph captures to perfection the same political magic that swept the 43-year-old Trudeau to victory in last Monday's Canadian general election.

Inevitably, those New Zealanders favouring a change of government in 2017 are scouring the ranks of opposition parties for a Kiwi politician capable of bringing some Trudeau magic to our own political arena.

Labour supporters, in particular, are looking at the rather dour figure of Andrew Little and wondering whether he has what it takes to unseat a Prime Minister as popular as John Key.

New Zealand leftists who have studied the Canadian campaign are worried that Labour has already committed itself to the sort of moderate and fiscally unadventurous course that saw Canada's left-wing New Democrat Party (NDP) relegated to third place behind Trudeau's Liberals and Stephen Harper's Conservatives.

So concerned was the dour and rather tetchy NDP leader, Tom Mulcair, to fend-off criticism that his party wasn't ready to manage the Canadian economy, that he promised voters to keep the federal Budget in permanent surplus. Given that this was also Stephen Harper's policy, Mulcair's decision allowed Trudeau to outflank the NDP on the left. Little's critics look at his inept handling of the Trans Pacific Partnership issue and wonder whether something similar hasn't already happened here.

The Greens male co-leader, James Shaw, certainly shares much with Trudeau in terms of projecting youthful energy and good looks. Less certain, however, is his willingness to adopt the Liberal leader's strategy of inviting voters from across the political spectrum to join his nationwide crusade for "real change". And, even if he was up to persuading his colleagues to leave the the safety of their eco-socialist strongholds, and embrace the political centre, would he be able to persuade the electorate that the Greens, in office, would remain politically centred?

It is the curse of the Greens to be perceived as enthusiastic promoters of a rather narrow ideological agenda. Historically, the Canadian Liberal Party has attracted solid voter support across the whole electorate. It's a trick New Zealand's Greens have yet to master.

NZ First, by contrast, has never ceased presenting itself as a party with the broadest possible voter appeal. Indeed, in its early days, back in the early 1990s, its support rivalled that of the National Party's.

Unashamedly populist in his political instincts, NZ First's long-time leader, Winston Peters, would dearly love to replicate Trudeau's utter trouncing of John Key's good "mate", Stephen Harper. Unfortunately, youthfulness is not a quality many people associate with NZ First. A sunny disposition is, however, well within Peters' political repertoire. One flash of his 1000 watt smile generally absolves him of most political sins. Which is why, presumably, NZ First's highly successful by-election campaign in Northland was so jaunty and up-beat. If Peters is able to demonstrate such sunny ways on a national scale in 2017, who knows what might happen.

In the end, however, most of the speculation about whether a Justin Trudeau is lurking, unrecognised, in the Opposition's ranks circles back to the Labour Party. If Little is too dour and grumpy to beat the man Bill English once described as "bouncing from cloud to cloud", who is left to bounce Labour's banner up there alongside him?

Grant Robertson would probably say Grant Robertson. (And, to be fair, there are many in the Labour Party who would agree). But, to the rest of New Zealand, Robertson can come across as just a bit too complacent; a bit too absolutely, arrogantly, Wellington. For the best part of a year, he's had plenty of chances to shine as Labour's finance spokesperson. That his light has barely flickered in that role must count heavily against him.

Which leaves just two names for Trudeau-seekers to play with: Stuart Nash and Jacinda Ardern. Both are well endowed with the skin-deep trappings of the Trudeauesque politician: youth and good looks. Nash even boasts a famous Labour name – although, the number of people who recall New Zealand once having had a Prime Minister called Walter Nash will not be large. Ardern, herself, is already registering in the preferred Prime Minister stakes – always a sign of better things to come. The positives are definitely there for both MPs.

But can either of them boast a photograph like Andrew Vaughan's? Has a photographer ever frozen Nash or Ardern in that magical political moment when anyone with a beating heart knows – just knows – that this is the one to watch?