The City of London's favourite sons took a beating in the New York primaries last night. Pro-business, pro-British incumbents were swept aside by a wave of left-wing insurgents backed by Columbia professor Mahmood Mamdani. The message from the electorate is clear: they want more spending, more debt, and more of the fiscal incontinence that markets abhor.
For those of us who watch the bond markets, this is a worrying signal. Gilt yields are already under pressure from inflation expectations, and a shift to the left in America only adds to the uncertainty. Capital flight from the dollar is a real possibility if these candidates follow through on their promises to raise taxes and regulate financial services.
Let's be clear: this is not just about New York. It is about the global appetite for risk and the willingness of central banks to tolerate fiscal profligacy. The Bank of England and the Federal Reserve have been walking a tightrope between supporting growth and containing inflation. A fresh wave of deficit spending could tip the balance.
The so-called 'Mamdani Democrats' have been vocal about their desire to break up big tech, impose windfall taxes, and expand social programmes. All of this adds to the national debt and puts upward pressure on long-term interest rates. For bond investors, it is a nightmare scenario.
Meanwhile, the incumbents who lost were those who had championed free trade, deregulation, and closer ties with Britain. Their defeat is a blow to the special relationship and a boon to protectionism. The City of London will feel the pinch if cross-border capital flows are restrained by new tariffs or capital controls.
What does this mean for the average British investor? In the short term, expect volatility in US equities and a flight to safe havens like gold or Swiss francs. The pound may strengthen as capital seeks refuge from a left-wing America, but that will be cold comfort for exporters. Longer term, we must ask whether the zeitgeist has shifted irreversibly against the Anglo-American model of capitalism.
I am not one for alarmism. Markets have a way of punishing profligate governments, and the 'bond vigilantes' are never far away. But if Mamdani's disciples win in November, we could see a repeat of the early 2010s when yields spiked as confidence evaporated. The difference this time is that central banks are less willing to intervene. Their balance sheets are already bloated, and political pressure to keep rates low is mounting.
Let's watch the 10-year Treasury yield closely. A break above 3% would be a loud warning shot. For now, I recommend investors hedge their currency exposure and reduce allocations to US treasuries. The era of cheap money may be coming to an end, and the primary results in New York are a harbinger of the political risks ahead.
The bottom line is this: when politicians start promising free lunches, the markets eventually present the bill. New York's voters have just ordered a three-course meal. We shall see who picks up the tab.
