The 10 longest-serving senators currently in office
Source: Business Insider ·
Unlike the White House, where US presidents can serve only two terms, members of Congress have no term limits.
From the source
From left to right: Sen. Chuck Grassley, Sen. Susan Collins, and Sen. Mitch McConnell.Finn Gomez/Getty Images ; Charly Triballeau/AFP via Getty Images ; Pete Kiehart/Bloomberg via Getty ImagesThere are no term limits for Senate members, and some have served for decades.Sen. Susan Collins, 73, is running for her sixth Senate term in a high-profile race in the midterms.Sen. Chuck Grassley, 93, is the longest-serving current senator with 45 years in the Senate.Unlike the White House, where US presidents can serve only two terms, members of Congress have no term limits.In the US Senate, some members have served for decades.Senators are also getting older, on average. In the 119th Congress, which began in 2025, the median age of US senators was 64.That marks an increase from the 113th Congress in 2013, when the median age in the Senate was 61, per Ballotpedia.Of the 10 longest-serving senators, two are running for reelection in the 2026 midterm elections.Here are the current senators who…