(CNN) The mother of a student killed in the Marjory Stoneman Douglas High School shooting earlier this year has won a spot on the Broward County School Board, according to unofficial election results.

Lori Alhadeff, a former teacher whose daughter Alyssa was killed in the shooting, won the District 4 seat handily on Tuesday, propelling herself onto the school board that oversees the high school where her daughter was killed.

But not all parents affected by the school shooting in Parkland, Florida, who were running for office saw success on Tuesday.

Ryan Petty, whose 14-year-old daughter, Alaina, was killed in the shooting, narrowly lost a chance to vie for the school board seat, according to unofficial election results.

The two ran in tandem as a tribute to their lost children and pledged changes to the county school board.

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