Another Des Moines-area Democrat is entering the race to unseat Third District Congressman David Young.
Businesswoman Theresa Greenfield says in a release issued Wednesday she will join the contest.
She is president of the family-owned real estate firm Colby Interests.
Greenfield joins businesswoman Cynthia Axne and activist Heather Ryan in the Democratic field.
Political operative Pete D’Alessandro is considering a run.
Greenfield grew up on a farm in southern Minnesota near the Iowa border.
She's a former city planner who attended Iowa Lakes Community College and Iowa State University before graduating from Minnesota State University in Mankato.