Sen. Rob Portman (R-Ohio) will back former Ohio Republican Party chairwoman Jane Timken as his chosen successor in an attempt to boost her through a crowded GOP field later this year. In a statement released Wednesday, Portman said Timken would be the candidate best positioned to keep his seat in Republican hands in the midterm elections. “I believe Jane Timken is the best candidate to advance conservative Republican policies to help Ohio workers and families. Jane is smart and hard working, and understand the needs of Ohioans,” Portman said. “I am confident in her ability to win both the primary...