Several labor organizations are adding their weight to Danielle Cohen Higgins’ bid for re-election to the Miami-Dade Commission, joining several public safety and public-sector employee unions backing her. SEIU Florida, the South Florida AFL-CIO — including UNITE HERE Local 355 — and 32BJ SEIU announced their endorsements of Cohen Higgins, citing her record of pro-labor policymaking at County Hall. “Commissioner Danielle Cohen Higgins has been a…