Why Andrew Johnson’s Impeachment Articles Failed in the Senate
In 1868, the U.S. House of Representatives impeached President Andrew Johnson, the first American president to face impeachment. But impeachment did not remove him from office: the Senate fell one vote short of the two-thirds majority needed to convict. The result reflected more than a dispute over one law. It grew out of Reconstruction, a fierce struggle between Johnson and congressional Republicans, and senators’ concerns about whether the charges justified overturning a presidential election.
What “Failed” Means in Presidential Impeachment
Impeachment has two stages. The House decides whether to approve articles of impeachment, which function as formal charges. The Senate then holds a trial and votes on whether to convict and remove the president. The House impeached Johnson, so the impeachment articles did not fail at that stage. They failed to secure convictions in the Senate.
The Constitution requires a two-thirds vote of senators present to convict in an impeachment trial. In Johnson’s case, the Senate’s first verdict was 35 votes to convict and 19 to acquit. With 54 senators voting, conviction required 36 votes. The Senate later took the same vote on two other articles, again falling short. It did not vote on the remaining articles.
That distinction matters: a Senate acquittal does not erase a House impeachment. It means the Senate did not find the president guilty of the charged offenses by the constitutionally required margin. Johnson remained in office and completed his term in March 1869.
The Political Crisis Behind the Impeachment
Johnson became president after Abraham Lincoln’s assassination in April 1865. A Democrat from Tennessee who had remained loyal to the Union, he took office as the Civil War ended. The central political question was how the former Confederate states would rejoin the Union and what rights newly freed people would have.
Johnson favored a relatively lenient restoration of Southern governments. He issued pardons, allowed states to organize new governments, and opposed major federal protections for Black Americans. Many congressional Republicans believed his approach would let former Confederate leaders regain power and leave freed people vulnerable to discrimination and violence.
Congress pursued a different course. It passed civil rights and Reconstruction measures and sought to place the former Confederate states under stronger federal supervision. Johnson vetoed several bills, including the Civil Rights Act of 1866, but Congress overrode that veto. The conflict was a sustained contest over national policy and the balance of power between the president and Congress—not simply a disagreement about a cabinet appointment.
Congressional Republicans also disagreed among themselves. Some favored more forceful protection for freed people and a more demanding Reconstruction process. Others worried about executive power, constitutional limits, or the political consequences of removing a president. Those divisions would matter when the Senate voted.
The Tenure of Office Act and Edwin Stanton
The immediate trigger was a confrontation involving Secretary of War Edwin Stanton, a Lincoln appointee who supported congressional Reconstruction. In 1867, Congress passed the Tenure of Office Act over Johnson’s veto. The law restricted the president’s ability to remove certain officeholders without Senate approval. Its application to Stanton, whose original appointment predated Johnson’s presidency, was disputed.
Johnson suspended Stanton in August 1867 while the Senate was in recess. When the Senate later refused to approve the suspension, Stanton returned to office. On February 21, 1868, Johnson removed Stanton and appointed General Lorenzo Thomas as acting secretary of war. Stanton refused to leave his office, and Thomas’s appointment set off the decisive confrontation.
Johnson argued that the law did not prevent him from removing Stanton. He also believed the statute was unconstitutional. Congress’s supporters saw the removal as a direct violation of a law enacted to protect its authority over Reconstruction. The disagreement therefore involved both a factual question—what Johnson had done—and a constitutional one—whether the law validly restricted presidential removal power.
What the Impeachment Articles Alleged
The House adopted 11 articles of impeachment in late February and early March 1868. Most concerned the Stanton dispute and Johnson’s alleged attempts to undermine congressional authority. The articles cited his removal of Stanton, his appointment of Thomas, and his alleged efforts to prevent execution of the Tenure of Office Act.
Other articles focused on Johnson’s public speeches. The House alleged that some remarks criticizing Congress and Reconstruction policies were intended to bring Congress into “disgrace, ridicule, hatred, contempt and reproach.” Article XI gathered several accusations into a broad charge that Johnson had used his office to challenge Congress’s authority and obstruct the laws governing Reconstruction.
The articles did not all rest on an identical theory. Some alleged specific violations of the Tenure of Office Act; others treated Johnson’s conduct and statements as part of a wider effort to defy Congress. That breadth gave the prosecution a political narrative, but it also raised a central question for senators: did the evidence establish impeachable misconduct, or did it show a bitter policy and constitutional dispute?
Why the Senate Did Not Convict Johnson
The Evidence Did Not Persuade Enough Senators
The Senate trial began on March 5, 1868, with Chief Justice Salmon P. Chase presiding. The House managers argued that Johnson had knowingly defied Congress and that his actions threatened the constitutional order. Johnson’s defense challenged the interpretation and validity of the Tenure of Office Act and disputed the prosecution’s account of his conduct.
Senators had to decide not only whether Johnson’s actions occurred, but whether the charges justified removal. The law’s scope was uncertain, and the question of whether it covered Stanton was contested. The case was therefore less straightforward than a simple allegation that the president had plainly broken an unambiguous statute.
Some Republicans Feared a Dangerous Precedent
Johnson was deeply unpopular with many Republicans, but opposition to his policies did not automatically mean support for conviction. Several Republican senators worried that removing a president over a disputed law or political conflict could weaken the independence of the executive branch. They feared that Congress might use impeachment to force a president from office for disagreeing with its program.
Seven Republican senators ultimately voted against conviction. Their reasons were not necessarily identical, and the result should not be reduced to a single motive. But their votes were decisive: with 35 senators supporting conviction, one more guilty vote was needed to reach the required 36.
The Articles Raised a Question About Impeachable Conduct
The Constitution allows removal for “Treason, Bribery, or other high Crimes and Misdemeanors.” It does not provide a precise list of every impeachable offense. The Senate had to consider whether Johnson’s actions amounted to a serious abuse of office or instead reflected a contested interpretation of presidential powers and federal law.
That distinction remains important in American impeachment debates. Impeachment is a constitutional remedy, not simply a vote of no confidence. Senators may disagree with a president’s policies or judgment yet conclude that the evidence does not establish an offense warranting removal. Johnson’s trial tested where that line should be drawn.
Political Calculation and Party Divisions Played a Role
Politics shaped the trial on both sides. Congressional Republicans wanted to protect Reconstruction and congressional authority; Johnson’s allies defended his presidency and challenged the impeachment effort. The impending presidential election also formed part of the political environment. Still, it is too simple to say the acquittal happened solely because senators were calculating electoral advantage. Constitutional concerns, doubts about the charges, and party pressures overlapped.
The vote also revealed that the Republican Party was not unified on the question of removal. Although Republicans held a strong Senate majority, the two-thirds threshold made a cross-party or cross-faction consensus essential. The prosecution could not secure enough votes even in a chamber where Johnson’s political opponents held substantial power.
The Senate Votes and Their Immediate Result
On May 16, 1868, the Senate voted on Article XI, one of the broadest articles. The result was 35 guilty to 19 not guilty—one vote short of the required two-thirds. On May 26, the Senate voted on Articles II and III. Each again received 35 votes for conviction and 19 against.
After those votes, the Senate adjourned the trial without voting on the other eight articles. Because the necessary supermajority had failed on the articles brought to a vote, Johnson was acquitted and remained president. The outcome was narrow, but the constitutional rule was clear: a simple majority could not remove him.
| Trial detail | What happened |
|---|---|
| House action | Approved 11 articles of impeachment |
| First Senate vote | Article XI: 35 guilty, 19 not guilty |
| Votes on Articles II and III | Each received 35 guilty votes and 19 not-guilty votes |
| Votes required for conviction | 36 of the 54 senators voting |
| Outcome | Acquittal; Johnson remained in office |
What Happened After the Acquittal
Johnson completed his presidential term, but the trial did not settle the underlying conflict over Reconstruction or presidential power. Congress continued to shape Reconstruction policy, and the political balance shifted after the 1868 election. Ulysses S. Grant succeeded Johnson in March 1869.
The acquittal also became an important precedent. It demonstrated that a president could be impeached by the House yet remain in office if the Senate did not reach the two-thirds threshold. Later debates about impeachment have drawn on the Johnson trial, particularly its warning that removal should not be treated as a routine response to political disagreement.
The case did not establish that presidents may disregard laws or that Congress cannot limit executive action. Rather, it showed how difficult it is to remove a president when senators disagree about the evidence, the meaning of a statute, and the constitutional standard for impeachable conduct.
Why the Impeachment Articles Failed: The Core Explanation
Andrew Johnson’s impeachment articles failed in the Senate because the prosecution could not persuade the required two-thirds of senators that his conduct warranted removal. The Tenure of Office Act dispute was legally contested, the articles included broad allegations about his challenge to Congress, and several Republicans feared setting a precedent that could make impeachment a tool for settling policy disputes.
In the end, the decisive fact was mathematical: 35 senators voted to convict, but 36 votes were needed. The narrow result reflected a deeper constitutional judgment. A majority of senators opposed Johnson’s conduct strongly enough to support conviction, but not enough senators agreed that the case met the threshold for removing a president.