The announcement from Brown, a former three-term senator, bolsters Democrats’ long-shot hopes of flipping back the Senate in the 2026 elections. Republicans currently hold a 53-47 majority in the chamber, with Democrats’ strongest opportunities appearing to be in Maine and North Carolina.

Former Sen. Sherrod Brown (D-OH) launched his 2026 Senate campaign on Monday, setting up a high-stakes battle for a pivotal Ohio seat against Republican Sen. Jon Husted (R-OH), who was appointed to re...