From selling street food to shaking up Mexican politics, senator poses challenge to president's party

Xóchitl Gálvez overcame poverty and sexism to become a tech entrepreneur and senator.
Gálvez is offering an alternative to President López Obrador's dominant Morena party.
She has gained attention for her straight-talking style and profanity, connecting with the working class.
Gálvez represents hope for change in Mexican society and politics.
Her life story resonates across social classes in the upcoming presidential race.