Former Kansas Republican Sen. Nancy Kassebaum Baker, the first woman elected to the U.S. Senate without following a husband into office, died Friday of natural causes, closing the book on an 18-year career that reshaped what women could achieve in Congress.

Her son, Bill Kassebaum, confirmed the death to The Associated Press. No location was given. She was 94. Kassebaum Baker won her seat in 1978, served three terms, and left Washington in 1997 as the only woman chairing a Senate committee, at a time when just eight women held seats in the chamber. Fox News reported her death alongside tributes from her family and a review of her long record in public life.

Her father was Alf Landon, the Kansas governor who carried the Republican presidential nomination in 1936 and lost to Franklin Roosevelt. She grew up in a household where politics was a family trade, but she earned her own place in it. When she ran for the Senate, she did not ride a husband's name or a widow's appointment. She won on her own terms, a distinction no woman in U.S. Senate history had claimed before her.

Kansas voters gave her margins most senators never see

Kassebaum Baker's re-election numbers tell a story that modern politicians would envy. In 1984, she won 76 percent of the vote. Six years later, she took 74 percent. Those margins reflected a senator who kept her focus on her state and earned broad trust across party lines, a feat that has grown rarer with every election cycle.

Her son captured that bond plainly. Bill Kassebaum told the Associated Press:

"She loved Kansas. She loved people from Kansas and representing Kansas for 18 years in the U.S. Senate."

He added that she was "an independent-minded Republican who was willing to stand up for what she thought was right, even if that meant going against the party." That willingness defined her career, for better and, in some conservative eyes, for worse.

The loss of figures from that generation of Republican leadership has become a recurring theme in American politics. The recent death of Sen. Lindsey Graham prompted similar reflections on what the party loses when its senior voices go silent.

A landmark health law and a bipartisan streak

Kassebaum Baker's most durable legislative achievement was a 1996 health insurance law that bore her name alongside that of Democratic Massachusetts Sen. Ted Kennedy. The law addressed insurance portability, the ability of workers to keep coverage when they changed jobs. Cross-party legislation of that scale has become almost unthinkable in today's Senate, which makes the accomplishment stand out even more sharply in hindsight.

She also supported an assault weapons ban backed by President Bill Clinton, a position that put her at odds with much of her own party. After leaving the Senate, she served on a bipartisan commission on campaign finance reform during the Clinton administration. Newsmax noted that she was widely regarded as a moderate Republican, a label that carried different weight in her era than it does now.

Shortly before leaving office, she married former Republican Sen. Howard Baker of Tennessee. Howard Baker had served as President Ronald Reagan's chief of staff and later became U.S. ambassador to Japan under President George W. Bush. Kassebaum Baker accompanied him to Tokyo for that posting.

Before departing for Japan, she offered a simple farewell: "All I can say is, I will miss the Kansas prairie." Howard Baker died in 2014.

Questions about aging political figures and their capacity to serve have surfaced repeatedly in recent years. The controversy over a Louisville newspaper that published a hostile pre-obituary of Mitch McConnell while he was hospitalized showed how raw those conversations can get.

Later years brought a break with the GOP

Kassebaum Baker's record grew harder for many Republicans to defend as she aged. She endorsed Democrats in several Kansas races, including Democratic Gov. Laura Kelly. And after the Jan. 6, 2021, attack on the U.S. Capitol, she called for President Donald Trump's impeachment, telling Kansas City's KMBC: "This just has gone too far."

Those choices placed her squarely among the Republican figures who broke publicly with their party's direction in the Trump era. Whether that reflected principled independence or a drift leftward depends on where you stand. What is not in dispute is that she made those calls openly and put her name behind them, a willingness to accept consequences that many of her critics in both parties have not matched.

The New York Post reported that Kassebaum Baker was known for her bipartisan work and moderate values throughout her career, a reputation that preceded her later endorsements of Democratic candidates. Breitbart also confirmed the details of her death and her historic distinction as the first woman elected to the Senate without following a spouse.

The broader landscape of women in Republican politics continues to shift. Just recently, Rep. Nancy Mace dropped out of the South Carolina Senate race one day before the filing deadline, a reminder that the path Kassebaum Baker carved remains difficult terrain for women in the GOP.

What Kassebaum Baker's career measured

She entered the Senate when no woman had won a seat there on her own merits. She left it as the only woman chairing a committee, with eight female colleagues where there had been almost none. She won re-election twice by margins that would make any modern incumbent weep.

Her legislative legacy, the health insurance portability law, the campaign finance work, the willingness to cross the aisle, belongs to an era of Republican governance that prized results over purity tests. Conservatives who value that tradition will honor it. Those who believe the party needed to move in a harder direction will note that Kassebaum Baker eventually moved with the other side.

Both readings are honest. And both say something about what the Republican Party was, and what it has chosen to become.

Nancy Kassebaum Baker served Kansas for 18 years, broke a barrier that had stood for the entire history of the republic, and never pretended to be anything other than what she was. Washington could use more of that, even when the votes land somewhere uncomfortable.