For months, Roem had knocked on doors and visited subdivisions, talking to anyone who would listen about her goal of alleviating traffic on Northern Virginia's crowded roadways.
All the while, she wore her trademark rainbow scarf, an unspoken acknowledgment of her quest to become the first openly transgender person elected and seated in a U.S. state legislature.
Del. Robert G. Marshall (R-Prince William) has spent a career fighting against liberal causes including LGBT rights. He has called himself Virginia's "chief homophobe;" earlier this year introduced a "bathroom bill" that died in committee.
Conservative groups denounced Roem's victory, mocking the money she received from national LGBT groups and saying the political right had "failed to defend one of its best allies in Bob Marshall."
"This is what happens when the radical transgender lobby pours more than $600,000 into a small state race and conservative donors largely sit the race out — Democrats cruise to victory and claim a mandate on an issue they were too afraid to outwardly campaign on," said Terry Schilling, executive director at the Washington-based American Principles Project, which donated money to Marshall and orchestrated a telephone poll aimed at shoring up his supporters late in the race.
In an interview Tuesday night, Roem said her victory was a win for inclusion in Virginia.
"Discrimination is a disqualifier," she said. "You can serve if you have good public policy ideas, you're well qualified and you have a commitment to do the work of the people you're running to represent."
She also said she is not going to forget her main campaign promise.
"We're gonna finally fix Route 28," Roem said from a party in Gainesville where she declared victory. "If anybody thinks I was joking about that, they're about to be annoyed for the next two years as I constantly persist."
Here is our main news story on Roem's victory, followed by other key stories The Washington Post has written on the race: