The words "Go back home" were also painted on signs. It is the latest incident of racism and intolerance in the run-up to the Oct. 27 election.
Abukar said it left her disheartened and angry — at first.
"But it's not matter of being sad. It's a matter of taking anger and applying it positively and saying 'I don't give into hate. I don't give into coercion and bullying,'" she told CBC News.
"I'll pick the sign up and put ten more where that one was vandalized."
Abukar is one of 14 candidates in Ward 2 looking to replace Doug Ford and is going up against Rob Ford in the election.
Another Ward 2 hopeful, Andray Domise, also had signs damaged. He too vowed to fix them and put more up in their place.
The incident prompted a show of support from many online, including mayoral candidate Olivia Chow.