Cayetano cut a one-minute radio spot for the Hanabusa campaign that went live Monday.
In it, Cayetano says Hanabusa has the "experience, maturity and wisdom" to make a great senator, adding that she knows what it is like to struggle and work hard.
From the ad:
"When you look at the experience of the candidates and their records, there is no comparison. Colleen's record is remarkable. She demonstrated the leadership qualities that made her the first female senate president in Hawaii’s history. She had the courage to make hard decisions. I've been in some tough battles with her, but after each one I gained a growing respect for her abilities."
You can listen to the full spot here:.
Hanabusa and Schatz are facing off in the Democratic primary election in August.