evidence: Employees of McKinsey & Company are opening their wallets for one of their own, Pete Buttigieg, in the Democratic presidential race. Mayor Pete is far and away the top recipient of donations from McKinsey employees, accounting for nearly half of presidential primary contributions from people working at the firm, according to a Sludge analysis of FEC data. [...] The Pete for America committee received a maximum contribution from Gary Pinkus, chairman of McKinsey North America, who is touted as "a global leader in private equity and investment, with deep roots in healthcare." [...] Gretchen Berlin, a D.C.-based partner in the health care sector, also contributed the maximum amount to Buttigieg. Last month, Sludge reported on Buttigieg’s transformation into a leading critic of a single-payer Medicare for All system as he scored donations to his campaign from individuals in the health insurance and pharmaceutical industries.