After dismal primary showings, Hawaii Congresswoman Tulsi Gabbard has formally exited the race and endorsed former Vice President Joe Biden for the presidency.Gabbard made the announcement in a video posted to social media on Thursday, highlighting how the world must come together to fight the COVID-19 outbreak."I feel that the best way I can be of service at this time is to continue to work for the health and well-being of the people of Hawai'i and our country in Congress and to stand ready to