Following a runoff election on Tuesday night, a Democrat has been elected mayor of Miami for the first time in nearly 30 years. The loss was a blow to Republicans so significant that a top ally to President Donald Trump is now warning of a “bloodbath” for the party in the upcoming midterms. Democrat Eileen Higgins won Miami’s mayoral race on Tuesday, besting Trump-endorsed Republican Emilio Gonzalez. Higgins previously received the most votes in the initial round of voting on Nov. 4, but the results nevertheless triggered a runoff. This win marks the first time in 28 years that a Democrat will…