Susan Lucci is an actress who was on the American soap opera "All My Children." She was nominated for a Daytime Emmy 19 times, losing every time until she finally won in 1999.
In pop culture references, Susan Lucci is someone (or people) who is often in the running to win, yet consistently loses.
I've been up for student president every year, yet I never win! I'm sick of being the Susan Lucci of the school.