WASHINGTON (Reuters) -Democratic U.S. Representative Alcee Hastings has died at the age of 84, his office said on Tuesday, further narrowing the party’s majority in the lower chamber of Congress. Hastings, a former judge and civil rights activist, has served 15 terms in the U.S. House of Representatives in a Florida district that now includes parts of Fort Lauderdale, Palm Beach and the area around Lake Okeechobee, his website said. He most recently won his seat with 78.7% of the vote. In January 2019, Hastings said he was diagnosed and receiving treatment for pancreatic cancer. His death leav…