Justice Stephen G. Breyer will retire from the Supreme Court at the end of the current term, creating President Biden’s first opportunity to fill a seat on the nine-member court and setting up a confirmation fight that Senate Democratic leaders say they intend to complete promptly.

The 83-year-old justice formally informed the White House that he plans to leave active service when the court rises for its summer recess, assuming a successor has been nominated and confirmed. The Supreme Court made the retirement public Thursday, ending months of speculation about whether Breyer, the court’s oldest member and one of its three liberal justices, would step down while Democrats control both the presidency and the Senate.

Breyer’s departure will not alter the court’s current 6-3 conservative majority, but it will give Biden a consequential chance to shape the institution for decades. Biden has previously pledged that his first Supreme Court nominee would be a Black woman, and the White House now faces the unusually compressed task of vetting candidates while the Senate prepares for a confirmation battle in an evenly divided chamber.

A vacancy without an ideological shift

Breyer has served on the court since 1994, when President Bill Clinton nominated him to succeed Justice Harry Blackmun. In a set of statements released by the court, Chief Justice John Roberts and Breyer’s colleagues praised his pragmatism, collegiality and long public service. His retirement is expected to take effect only after a successor is confirmed, reducing the risk that the court would operate for an extended period with eight justices.

The vacancy arrives at a moment when the court is deciding disputes over abortion, gun rights, religious liberty and federal regulatory power. The ideological balance will remain unchanged if Biden selects a broadly liberal successor, but the age of the next justice could matter significantly. A nominee in her 40s or 50s could occupy the seat for a generation, preserving a three-member liberal bloc even as the conservative majority continues to control outcomes in many closely divided cases.

Senate Judiciary Committee Chairman Dick Durbin said in a statement that the committee would move expeditiously once a nomination arrives. Durbin called Breyer a respected jurist and said the committee would conduct a fair and timely process. His Republican counterpart, Sen. Chuck Grassley, likewise acknowledged Breyer’s service in his own statement while making clear that Republicans will closely examine the eventual nominee’s record and judicial philosophy.

An evenly divided Senate changes the arithmetic

Democrats hold the Senate through Vice President Kamala Harris’s tie-breaking vote, meaning they can confirm a Supreme Court nominee without Republican support if all 50 members of their caucus remain united. Supreme Court nominations are no longer subject to the 60-vote filibuster threshold, so the central political challenge for the White House will be maintaining Democratic cohesion rather than assembling a bipartisan supermajority.

Majority Leader Charles Schumer said the Senate would proceed with “deliberate speed” and promised a fair process in a statement Thursday. That language signals that Democrats are unlikely to allow the nomination to drift deep into the election year. The calendar matters because control of the Senate will be decided in November, and a change in majority could fundamentally alter the president’s ability to fill a vacancy.

Democratic senators have also emphasized the significance of Biden’s promise to nominate a Black woman. Sen. Sheldon Whitehouse, a member of the Judiciary Committee, said in a statement that Breyer’s retirement would create an opportunity to add a voice that has never before been represented on the Supreme Court. More than 100 justices have served since the court’s creation, but no Black woman has ever been appointed.

The White House now turns to vetting

Biden’s legal team is expected to review a group of federal judges and other prominent lawyers who have already been discussed for possible elevation. The administration will have to examine opinions, speeches, financial records, professional associations and other material that can become central during televised confirmation hearings. Because the president’s party has no votes to spare, the political vetting will be nearly as important as the legal review.

The timing of Breyer’s announcement gives the administration several months before the court’s term ordinarily ends in late June or early July. That creates room for the White House to choose a nominee and for the Judiciary Committee to hold hearings before the justice formally leaves the bench. If the Senate confirms a successor before the summer recess, the transition could occur without leaving the court shorthanded for its next term.

Breyer’s decision also underscores the increasingly strategic character of Supreme Court retirements. Justices hold life tenure, and the timing of a departure can determine whether a president and Senate of the same party can shape the court. Democrats had openly urged Breyer to retire during Biden’s presidency, especially after the 2020 confirmation of Justice Amy Coney Barrett shifted the court further to the right.

A major nomination without a change in control

The coming fight will therefore carry two realities at once. The nomination is institutionally important because Supreme Court appointments can influence constitutional law for decades, yet it is not expected to change which ideological bloc holds the court’s majority. For Democrats, the objective is to preserve the existing liberal seat while fulfilling a presidential commitment on representation. For Republicans, the process offers an opportunity to scrutinize Biden’s judicial philosophy and the record of his first high-court nominee.

The next decisive step belongs to the White House. Once Biden announces his choice, the Judiciary Committee will begin the formal confirmation process, followed by a vote of the full Senate. With the chamber split 50-50 and the midterm election calendar advancing, every Democratic vote will matter, and the nomination will quickly become one of the most consequential domestic political contests of 2022.