The Nation’s Joan Walsh is out with a column calling J.D. Vance a “stalker” for following Vice President Kamala Harris around the country. “The rollicking Harris-Walz lovefest was in sharp contrast with Republican vice presidential nominee JD Vance’s dour appearance in Philly earlier in the day,” Walsh described. “Vance is scheduled to trail the pair to all the swing states they plan to visit this week. What is Donald Trump doing, sending his weirdo running mate out to stalk the charismatic Democratic duo, like a hangdog ex-husband? The low-energy Trump has exactly one event this week, in the …