AP Decision Notes: What to expect in Ohio’s presidential and state primaries

With the presidential nominations locked up, the most high-profile election in Ohio’s primary on Tuesday will be the Republican contest to take on Ohio’s Democratic U.S. senator. There are presidential contests in five states on Tuesday, but Ohio is one of two states also holding state and congressional primaries that day. Democratic Sen. Sherrod Brown, first elected in 2006 and uncontested in his primary this year, is among the most vulnerable members of a closely divided chamber and has managed to hold onto his seat even as the state has shifted to the right.