Lindsey Graham’s sister appointed to fill his South Carolina Senate seat

Following the sudden death of Sen. Lindsey Graham, R-S.C., Republican South Carolina Gov. Henry McMaster appointed Graham’s younger sister, Darline Graham, to fill his seat for the remainder of his term, continuing a legacy of family members stepping in to take the reins of power from their kin.

When Darline is sworn in Tuesday afternoon, she will become the latest example of a U.S. lawmaker sliding into a seat vacated by a deceased family member.

Rep. Julia Letlow

Rep. Julia Letlow, R-La., is a favorite of President Donald Trump and has his backing in her ongoing campaign to represent Louisiana in the U.S. Senate.

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Rep. Julia Letlow, R-La., attended a news conference with Republican lawmakers in the Capitol Visitor Center on Jan. 20, 2022, in Washington, D.C. (Tom Williams/CQ-Roll Call, Inc via Getty Images)

Her political career began years ago when Julia’s husband, Luke Letlow, died from COVID-19 complications in December 2020, just over a month after residents of Louisiana’s 5th district had voted him in as their congressman.

Though Luke Letlow was never sworn into office, his widow picked up the torch, running in and winning the 2021 special election to fill the House seat.

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Rep. Adelita Grijalva

On the other side of the aisle, Rep. Adelita Grijalva, D-Ariz., was also thrust into the halls of Congress after tragedy struck her loved one.

Grijalva’s father, former Rep. Raúl Grijalva, D-Ariz., died of lung cancer in March 2025. Raúl had already announced that he would not be seeking re-election after a 22-year stint in Congress.

U.S. Rep. Raúl Grijalva, D-Ariz., speaks before the signing of a moratorium on mining in the area of the Grand Canyon in Washington, D.C., Jan. 9, 2012. (Joshua Roberts/Bloomberg via Getty Images)

Six months later, Adelita Grijalva won a special election for her father’s seat, defeating Republican candidate Daniel Butierez Sr. by more than 40,000 votes, according to results published by the Arizona secretary of state.

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Though Democrats cried foul when House Speaker Mike Johnson, R-La., initially delayed her swearing in, she officially became a member of the U.S. House of Representatives on Nov. 12, 2025.

Rep. Adelita Grijalva, D-Ariz., poses for a photo with Speaker of the House Mike Johnson, R-La., during a ceremonial swearing-in at the U.S. Capitol Building on Nov. 12, 2025, in Washington, D.C. (Andrew Harnik/Getty Images)

Erica Lee Carter

Former Rep. Erica Lee Carter, D-Texas, also ascended into Congress as the result of a parent’s death.

Carter’s mother, Rep. Sheila Jackson Lee, D-Texas, was a progressive stalwart as the representative from Texas’ 18th Congressional District, which includes parts of Houston, from 1995 until her 2024 death.

President Joe Biden takes a selfie with Rep. Sheila Jackson Lee, D-Texas, after delivering the State of the Union address on Feb. 7, 2023, in the House Chamber of the U.S. Capitol in Washington, DC. (Jacquelyn Martin-Pool/Getty Images)

Though Jackson Lee won the Democratic primary for the 2024 election in March 2024, she died of pancreatic cancer just four months later.

The Democratic Party, including Erica Lee Carter, initially rallied around former Houston Mayor Sylvester Turner to replace Jackson Lee in a November special election. But shortly after endorsing Turner, Lee Carter changed her mind and decided to run to complete her mother’s term. Turner dropped out, and Lee Carter won the election by nearly 100,000 votes, according to results published by the Texas secretary of state.

Rep. Erica Lee Carter talks about her mother during the dedication of 1111 Fannin in honor of Congresswoman Sheila Jackson Lee in Houston, May 15, 2025. (Elizabeth Conley/Houston Chronicle via Getty Images)

Lee Carter chose not to run for re-election, finishing her mother’s term in January 2025 and choosing to cede the party’s nomination for the seat to Turner.

Though Turner won the seat and was sworn in Jan. 3, 2025, he served for two months, dying of bone cancer in March.

Mary Bono

Arguably the most famous example of a spouse stepping in for a deceased partner is the tale of Sonny Bono, who for years toured the U.S. with his then-wife, pop icon Cher, as one half of the iconic musical duo Sonny and Cher.

Sonny Bono (1935-1998), an American singer-songwriter, producer, actor and politician and his wife at the time, Cher, an American singer, actress and television personality, were an American rock duo in the 1960s and 1970s. (Jeff Hochberg/Getty Images)

Bono and Cher would eventually divorce and, after marrying and divorcing a third wife, Bono wed his fourth and final spouse, Mary Whitaker, in 1986.

Sonny ran for U.S. Congress as a Republican in 1994, winning a seat as the representative for California’s 44th district.

But when Bono died in a skiing accident in 1998, his wife, then known as Mary Bono, ran in a special election to fill his seat. Mary Bono ended up serving 15 years in Congress, losing her seat to Democratic challenger Raul Ruiz in 2013 after her district was redrawn.

Rep. Mary Bono Mack, R-Calif., co-founder of the Congressional Caucus on Prescription Drug Abuse, prepares to testify before a Senate Caucus on International Narcotics Control hearing in Dirksen July 18, 2012. (Tom Williams/CQ Roll Call via Getty Images)

Donald Payne Jr.

In New Jersey, former Rep. Donald Payne Jr., D-N.J., replaced his father, former Rep. Donald Payne Sr., D-N.J., in Congress.

Payne Sr. had represented New Jersey’s 10th district for 23 years, a tenure that was cut short when he succumbed to a fight with colon cancer in March 2012.

Donald Payne Jr. ran in the special election to replace his father and won.

Darline Graham

McMaster’s decision to tap Darline Graham to replace her brother will make her the first female U.S. senator in South Carolina history.

Sen. Lindsey Graham, R-S.C., hugs sister Darline Graham on stage as he announces his candidacy for U.S. president during an outdoor event for supporters on June 1, 2015, in Central, S.C. (Jessica McGowan/Getty Images)

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When their parents died in 1976 and 1977, Lindsey became his sister’s legal guardian. Accepting McMaster’s nomination for her to replace her brother, Darline vowed to return the favor of his lifetime of taking care of her.

“Lindsey has always been there for me. And, now, I will be there for him,” she told a crowd at South Carolina’s statehouse in Columbia, South Carolina, Monday.