Del. Mark D. Sickles announced Wednesday that he was dropping out of the race to succeed retiring Rep. James P. Moran Jr., saying an internal campaign poll showed his prospects to be dim.

“Last night, I looked at the results of our survey of likely Democratic primary voters with respect to the candidates who have expressed interest in the nomination,” Sickles (D) said in a written statement. “I wish that I could report that there was a clear and viable path to victory for me. While I was heartened by the strong support from those who know me best, I cannot in good conscience continue to ask for support from you, my friends, and political allies knowing the lay of the land.”

Sickles’s exit from the race still leaves a crowded field of Democrats seeking the party’s nomination in Northern Virginia’s deep-blue 8th District, including four other state legislators. The party’s nomination will be decided in a June 10 primary.

“This race is over for me, but there are many talented candidates that might light a spark, inspire, and engage new voters on the way to June 10th,” Sickles wrote.