James Walkinshaw has won the Democratic nomination in the special election to succeed the late Virginia Rep. Gerald E. Connolly.

Democrats and Republicans in northern Virginia have chosen candidates who will vie to replace the late U.S. Rep. Gerry Connolly.

Walkinshaw, a Fairfax County supervisor and Connolly’s former chief of staff, will face GOP nominee Stewart Whitson in the Sept. 9 election for this deep-blue seat.