Long-time SC senator died suddenly on Saturday.
State's 20th Congressional District's includes Broward, Palm Beach Counties
Democrat narrowly lost to DeSantis in 2018, later came out as bisexual
Supreme Court narrowed trans rights, advocates saw victories in other decisions
Massachusetts Democrat sent letter to Marco Rubio on Tuesday
Justices heard oral arguments in two cases in January
Thousands of transgender servicemembers await pivotal decision
Michigan State Police corroborated his account
Landmark ruling issued on June 26, 2015
Advocacy groups sued White House
