It seems like that might be the case according to Cincinnati.com.
A complaint was made by Thomas Brinkman Jr., a Republican candidate for Hamilton County auditor against Cincinnati Public Schools.
The suit alleges three van loads of Hughes High students arrived at the Downtown Board of Elections offices at 1 p.m. Wednesday, supervised by a school employee. School lets out at 3:15 p.m.
When they got out of the vans, the students, the suit alleges, also were accompanied by adults who appeared to be campaign workers or supporters for U.S. Rep. Steve Driehaus, D-West Price Hill.
The suit alleges they were given sample ballots containing only Democratic candidates.
The suit alleges those actions violated a 2002 agreement between Cincinnati Public Schools and the Coalition Opposed to Additional Spending Taxes where the school agreed it wouldn’t allow school property or employees to be used for “advocating the election or defeat of candidates for public office.”
UPDATE: Notice the timing. Rush covered this about 2 minutes after I did.
"The organizer clearly was biased by her Democrat stickers on her vest...and they had Democrat sample ballots with them...walking in to vote."
"It was clearly biased who they were to vote for."
Afterwards, Johnson contends, rather than returning the students to school, the van driver told him the students would be treated to free Graeter's ice cream.
Additional story here