Economists predict that a Trump victory in the US elections could weaken the euro against the dollar due to proposed tariffs and diverging monetary policies. Historical data shows mixed outcomes from Trump's previous presidency, but current forecasts suggest a potential drop in the euro to parity with the dollar if Republicans gain full control of Congress. Analysts warn that increased tariffs could lead to higher inflation in the US, prompting the Federal Reserve to raise interest rates, while the European Central Bank may ease policies, further disadvantaging the euro.