Everyone wants to win working-class voters. But have they realized many are women?

Congressional candidate JoAnna Mendoza can quickly rattle off prices from the grocery store in the small town of Eloy, Arizona, where she grew up. A couple of months ago, a pound of ground beef was going for about $13, a tomato was $1.50 and “a freaking cucumber was like $3.”  She knows because she’s a…