If Tulsi Gabbard were Senator Gabbard then she'd be a very strong contender for 2020, unfortunately she seems boxed in Hawaii with nowhere to go. Abercrombie losing in 2014 was probably the worst thing for her career considering she could've ran for Gov when he termed out. Hirono and Schatz aren't going anywhere so she is stuck.
Gabbard is still incredibly young, so I think a 2020 presidential run would be an unwise career move for her. If Hirono decides to retire in 2024, she could easily win the Senate seat and she'd only be 43, or she can make a run for the governor race in 2022 when Ige finishes his second term.
