Sen. John McCain (R-Ariz.) and New Jersey Gov. Chris Christie (R) will both campaign in Ohio on Monday for state Treasurer Josh Mandel, the Republican nominee for the Senate.

McCain will campaign with Mandel in Columbus on Tuesday morning, according to NewsNet 5. In the afternoon, Mandel and Christie will appear together in the Cleveland area.

The events signal major Republican establishment support for Mandel, a first-term treasurer who will face Sen. Sherrod Brown (D-Ohio) in November.

The Hill rates this race as leaning Democratic.