(CNN) - Big Republicans are coming out for Ohio Republican gubernatorial candidate John Kasich next week. Governors Haley Barbour of Mississippi, Chris Christie of New Jersey and Tim Pawlenty of Minnesota will headline a rally on October 29.
The three governors are also considered potential 2012 presidential candidates. Another possible 2012 candidate, former House Speaker Newt Gingrich, will campaign for Kasich next Tuesday.
Obama will visit the state on October 31.
Kasich is running to unseat incumbent Democratic Gov. Ted Strickland.