Vanessa Lopez knew the odds were stacked against her.
A first-time candidate going up against a three-term incumbent, Lopez realized she needed outside help to succeed in her Democratic primary challenge against Sen. Meghan Kallman for the District 15 seat representing Pawtucket and Providence.
“I have no one in my corner, so I was like, ‘how the heck am I going to do this,’” Lopez, 37, said in an interview…