New Delhi, Oct. 24 -- Barack Obama will campaign Saturday with Democratic candidates for the U.S. Senate in Ohio and Michigan, both highly competitive states that will help determine control of the chamber, as the former president ramps up his involvement in the midterm elections.

Obama's first event is in Cleveland with former three-term Ohio Sen. Sherrod Brown, who is looking to unseat Republican Sen. Jon Husted. Amy Acton, a Democrat running for governor against Republican Vivek Ramaswamy, will also appear at the rally.

Although Ohio has become more reliably Republican, it's been a hotly contested battleground this year.

President Donald Trump and Vice President JD Vance have both visited the state in recent weeks to drum up support...