GOP Presidential hopeful Rick Santorum won't be able to compete for all of Ohio's delegates in the March 6 Republican primary.

Santorum won't be on the ballot in Ohio's 6th, 9th and 13th congressional districts because he did not file for them, announced Ohio Secretary of State Jon Husted on Wednesday.

The failure to file means Santorum won't be able to collect those districts' nine delegates to the Republican National Convention later this year, when the GOP will officially annoint its presidential candidate.

The other major candidates, including Mitt Romney and Newt Gingrich, filed to run in all of Ohio's districts.

The 9th and 13th districts include parts of Northern Ohio. The 13th district runs from Lorain south into parts of Akron, including Avon, Avon Lake, Brecksville, Cuyahoga Falls, Fairlawn and parts of Strongsville.

The 9th distict stretches from the far west side of Cleveland to Toledo. The 6th district is in southern Ohio along the West Virginia border.