The United States Senate voted today to acquit President Donald J. Trump completely of the House Democrats’ made up impeachment charges, putting an end to a nearly three-week trial in the upper chamber.

Only one Republican, Sen. Mitt Romney of Utah, voted to convict the president on the abuse of power charge, breaking with his party. But he voted not guilty on the obstruction of Congress charge.

The 52 to 48 vote cleared Mr. Trump of the charge of abuse of power, and the 53 to 47 vote acquitted him of the obstruction of Congress charge.

House Democrats voted by party line to impeach Mr. Trump on Dec. 18 in two articles.

The first accused him of abuse of power stemming from a July phone call with Ukrainian President Volodymyr Zelensky in which President Trump requested a corruption probe of political rival and former Vice President Joseph R. Biden and Democrats’ activities in 2016, while supposedly withholding financial aid to Ukraine.

A second article accused the President of obstruction of Congress for claiming immunity from the House’s probe and blocking witnesses and documents that Democrats sought.

No Republicans voted for the articles in the House, marking the first time the impeachment of a President happened on a purely partisan basis. It should be noted that a few House Democrats actually broke with House Speaker Nancy Pelosi, voting against impeachment.

“We will reject this incoherent case that comes nowhere near justifying the first Presidential removal in history,” said Senate Majority Leader Mitch McConnell, Kentucky Republican, moments before the vote.

“This partisan impeachment will end today,” he declared.

Knowing it was unlikely 67 senators would vote to convict the President, Senate Minority Leader Charles E. Schumer took to the chamber floor and complained the Senate did not conduct a fair trial by refusing to call more witnesses or subpoena more documents.

“No doubt the president will boast that he received total exoneration,” said Mr. Schumer, New York Democrat. “But we know better. We know this wasn’t a trial by any stretch of the definition. And the American people know it, too.”

Trump campaign manager Brad Parscale said the President “has been totally vindicated.”

“It’s now time to get back to the business of the American people,” Mr. Parscale said. “The do-nothing Democrats know they can’t beat him, so they had to impeach him.”

He said the impeachment effort has now officially backfired on Democrats. They should be ashamed and embarrassed.

“This terrible ordeal was always a campaign tactic to invalidate the 2016 votes of 63 million Americans and was a transparent effort to interfere with the 2020 election only nine months away,” Mr. Parscale said. “And since the president’s campaign only got bigger and stronger as a result of this nonsense, this impeachment hoax will go down as the worst miscalculation in American political history.”

S.A. Miller and Dave Boyer contributed to this story.