This column begins with a simple but striking observation – the world’s most powerful leaders are old.

Donald Trump (79), Benjamin Netanyahu (76), Narendra Modi (75), Vladimir Putin (73), and Xi Jinping (72) dominate global politics. 

That is not unusual on its own. What is unusual is how consistent this pattern has become. 

Looking at national leaders across major economies since 1901, we find that today’s leaders are older than at any point in modern history. This isn’t random. It’s demography in action. 

For completeness sake, here is the age of our Australian prime ministers since 1901. 

The Baby Boomers, born between 1946 and 1963, were an unusually large generation. They moved through society like a demographic wave, filling universities, workplaces and eventually leadership pipelines. And once they reached the top, they stayed there. 

Longer life expectancy, better health and the professionalisation of politics turned leadership into a long-duration career.

Incumbency advantages strengthened. Political networks deepened. The result is a bottleneck at the top. 

Millennials, now in their late 20s to mid-40s, have reached the age where previous generations began to dominate political leadership.

Yet at the national level, they remain largely absent. Not because they lack ambition or ability, but because the system above them has been slow to turn over. 

State politics tells a different story. 

Over the past 40 years, Australian state premiers have clustered around age 48. That is nearly a decade younger than the average age of prime ministers (57) over the same period.

Power at the state level has already shifted to Gen X. 

This matters. It shows that the generational bottleneck is not universal. It is strongest at the very top. 

Now go one level lower, to city politics, and the shift becomes even more visible. 

In Germany, my inconsequential hometown of Gröbenzell recently elected a 42-year-old mayor, Daniel Holmer. 

More importantly, the economic powerhouse of Munich next door, chose a 35-year-old (Dominik Krause) as mayor. 

In Zohran Mamdani (34) New York City too has a mayor in his 30s. In Santiago de Chile, a 30-year-old rose to the top job. These are not isolated cases. Across the world, younger leaders are emerging first at the local level. 

History suggests this is more than a curiosity. Many national leaders first built their careers running cities.

Recep Tayyip Erdoğan, Joko Widodo, Boris Johnson, Matteo Renzi and Andrés Manuel López Obrador all followed this path. 

City leadership acts as a testing ground. The problems are immediate and visible: housing, transport, safety, public space. Voters can see whether things improve.

Or not. A successful mayor does not just promise change. They demonstrate it. 

There are early signs that younger leaders bring a slightly different political style. Not universally, but often enough to notice. They tend to focus on tangible outcomes, communicate more directly, and build coalitions around specific issues rather than broad ideological identities. 

At the national level, politics often rewards division as we get caught up on identity politics. At the city level, it rewards problem-solving. 

Australia is different. 

In many countries, mayors of major cities govern millions of people and control huge budgets and policy levers.

In Australia, the mayors of Sydney and Melbourne oversee relatively small inner-city councils. They are place managers, not system leaders. 

Real power sits with the states, where transport, planning, policing and budgets are controlled. That makes state politics, not local government, the key pipeline into national leadership. 

If Australia is to experience a similar generational shift, it will likely happen through state leadership, not city halls. 

So where are Australia’s young disruptors? 

They exist, but they are rarely found in the top jobs. Party structures remain strong and tend to reward seniority, loyalty, and time served. That slows generational turnover. 

Increasingly, younger political energy is emerging outside the traditional party system. The rise of independents reflects this shift. Without rigid party structures, they can campaign on specific issues, speak more freely, and appeal directly to voters. 

Figures like David Pocock illustrate this trend. They bypass the traditional career ladder and enter politics through alternative pathways. 

At the same time, a new generation of political voices is building influence through social media, where they control their message without party oversight. This creates a parallel pipeline into public life. 

The result is a gradual but important shift. 

Millennials are not absent from politics. They are waiting.

At the national level, leadership has aged and turnover has slowed. At the state level, power is more balanced. At the local level, the next generation is already stepping up. 

What does this mean for Australia? 

We are not immune to the demographic forces reshaping politics elsewhere.

The generational handover is coming, just more slowly and through different channels. Our federal system delays disruption at the top but allows it to build from below. 

The shift will not come as a sudden youth takeover. It will happen gradually, as traditional party structures lose their grip and alternative pathways into politics expand. 

When that moment arrives, politics may begin to look less like ideological trench warfare and more like practical problem-solving again. 

And that might be exactly what voters have been waiting for. 

Simon Kuestenmacher is a co-founder of The Demographics Group. His columns, media commentary and public speaking focus on current socio-demographic trends and how these impact Australia. His podcast, Demographics Decoded, explores the world through the demographic lens. Follow Simon on Twitter (X), Facebook, or LinkedIn. 

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