Top Illinois Democrats and the son of a former military veteran who died of Legionnaires’ disease at a state-run veterans home in downstate Quincy bashed Nirav Shah, the state’s former public health chief, on Friday after he launched his U.S. Senate candidacy in Maine. U.S. Sen. Tammy Duckworth, D-Illinois, and state Sen. Cristina Castro, D-Elgin, trashed fellow Democrat Shah’s bid to replace Graham Platner as the party’s nominee to take on Maine’s Republican U.S. Sen. Susan Collins in a pivotal