AI Summary

The 2026 U.S. midterm elections produced the largest Senate turnover in nearly half a century, delivering at least 15 new lawmakers to the chamber in January. This influx will replace several octogenarian senators, lowering the body’s average age to 65.4 years. According to IPU Parline data, that makes the U.S. Senate the oldest among OECD members, with the next oldest—Poland’s Senate—averaging 61.9 years and the Netherlands’ Senate 58.4 years.

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