ROMULUS, Mich. (AP) — Vice President Kamala Harris has declared herself and Minnesota Gov. Tim Walz “joyful warriors” as they spent their first full day as running mates rallying Democrats across the Midwest. But they got an idea of just how hotly contested the region would be when they overlapped on a Wisconsin tarmac with Republican vice presidential nominee JD Vance. Meanwhile, the Harris campaign said it had raised $36 million in the first 24 hours after the vice presidential announcement. Wednesday’s trip aimed to shore up support among the younger, diverse, labor-friendly voters who were instrumental in helping President Joe Biden win the 2020 election. That coalition has shown signs of fraying over Biden’s handling of the Israel-Hamas conflict.