Manning would not be the first transgender candidate to challenge a sitting member of Congress.
Kristin Beck, a retired Navy SEAL who is transgender, failed to unseat Steny Hoyer in Maryland’s Democratic Primary in 2016. Beck got 12% of the vote.
“It was too much for me to run for Congress,” Ms Beck said in a phone interview on Saturday. “I should have run for something lower. She might as well be running for president.”