“The two Democratic senators most likely to retire are” Sens. Barbara Boxer (D-CA) and Joe Manchin (D-WV). Boxer “has a paltry $149,000 in her campaign account, less than almost every other senator facing election next year “¦ Manchin is eyeing a return to the governor’s mansion, and his fundraising report filed with the FEC shows he is already starting to lay the groundwork.” He gave nearly $100,000 from his Senate campaign to local officials facing reelection.
“Two of the Senate Democratic caucus’s most senior members,” Sens. Patrick Leahy (D-VT), 74, and Barbara Mikulski (D-MD), 78, “also face reelection.” Sen. Harry Reid (D-NV) “who turns 75 in a week, is another potential retirement.”
For Republicans: “Sen. John McCain (R-AZ), 78, hinted last year that this would be his final stint in Congress but he appears to have changed his mind since then “¦ Sen. Chuck Grassley (R-IA) is 81 years old but he told a public television station in Iowa last year that he plans to run for reelection in 2016.”
“Republicans could lose Sen. David Vitter (R-LA), who announced in January that he would run for governor in 2015, if his bid is successful “¦ Republicans may also have to find replacements for Sens. Rand Paul (R-KY) or Marco Rubio (R-FL), who both face reelection in 2016, depending on whether they run for president and how well they do.” (The Hill)