Richardson, a Mendota Heights DFLer elected to the House in 2019, became CEO of Planned Parenthood North Central States last year, a few months after the U.S. Supreme Court struck down Roe v. Wade, the landmark ruling that had guaranteed a national right to abortion for half a century. She initially said she would take on both jobs.

But in a brief interview Saturday, Richardson cited the demands of working in an evolving health care landscape, in which maternal mortality is increasing rather than decreasing. She said she chose now to resign in order to give Gov. Tim Walz time to call a special election before the 2024 legislative session.

Richardson announced her decision in a post late Friday on X, the site formerly known as Twitter. She called serving in the Legislature "the honor of a lifetime" and wrote, "Legislative service is for a season & my season of service is ending effective immediately."

View post on X

Secretary of State Steve Simon said Saturday that Walz's only requirement in setting the special election is that someone must be in the seat by the start of the 2024 legislative session on Feb. 12.

"We have already been in touch with members of the governor's legal team and will be briefing them on their options after the holiday," Simon said.

In November 2022, Richardson was re-elected to a two-year term. Two months before that, she was named to the Planned Parenthood post. She is the first Black woman to hold the CEO position with the state's largest abortion provider.

At the time of her hiring, Richardson faced questions about her ability to balance the two demanding jobs; she said she could do it. Both Richardson and Planned Parenthood leaders said she would not be involved in political work or lobbying while in the Legislature.

But in recent months, Richardson ran into trouble with labor, a key DFL ally. The Service Employees International Union (SEIU) rescinded its endorsement of her, saying she had overseen a union busting campaign at Planned Parenthood, the Minnesota Reformer reported in July.

Some 435 Planned Parenthood workers unionized in 2022 at the nonprofit health care organization. Two of the union leaders were fired and the rest were disciplined, the Reformer reported. Workers protested at the Capitol outside the House chamber in April, demanding Richardson meet them.

The workers alleged the firings were retaliation and filed charges with federal labor regulators. Richardson did not comment, but Planned Parenthood issued a statement saying the allegations of union busting were unfounded.

As a DFL member of the House, Richardson most recently represented Eagan and Mendota Heights. Before taking the CEO job at Planned Parenthood, she was the chief executive at Wayside Recovery Center, a nonprofit based in St. Louis Park that provides mental health and substance abuse support.

Until Richardson's announcement, the DFL controlled the House 70-64. With her resignation, the DFL caucus drops to 69.

Richardson was first elected in 2018 when she defeated one-term Republican representative Regina Barr. In the last two elections, Richardson easily defeated Republican challenger Cynthia Lonnquist.

House Speaker Melissa Hortman, DFL-Brooklyn Park, called Richardson an extraordinary leader who rose to the challenge, especially in the aftermath of George Floyd's murder. But it's difficult to hold an outside job while working as a legislator, Hortman said: "You can only burn the candle at both ends for so long."

Hortman credited Richardson for shepherding paid family leave through the most recent legislative session.