MINNEAPOLIS — U.S. Sen. Amy Klobuchar said Thursday she is running for governor of Minnesota, promising to take on President Donald Trump while unifying a state that has endured a series of challenges even before the federal government’s immigration crackdown.

Klobuchar’s decision gives Democrats a high-profile candidate and proven statewide winner as their party tries to hold onto the office occupied by Gov. Tim Walz. The 2024 Democratic vice presidential nominee, Walz abandoned his campaign for a third term this month amid criticism over mismanagement of taxpayer funding for child care programs.

“Minnesota, we’ve been through a lot,” Klobuchar said in a video announcement. “These times call for leaders who can stand up and not be rubber stamps of this administration — but who are also willing to find common ground and fix things in our state.”

Klobuchar cited Trump’s immigration crackdown in Minnesota, federal officers killing two Minnesotans, the assassination of a state legislative leader and a school shooting that killed multiple children — all within the past year. She avoided direct mention of ongoing fraud investigations into the child care programs that Trump has made a political cudgel.

“I believe we must stand up for what’s right and fix what’s wrong,” Klobuchar said.

Klobuchar becomes the fourth sitting senator to announce plans to run for governor in 2026. The other races are in Alabama, Colorado and Tennessee.

Multiple Minnesota Republicans are campaigning in what could become a marquee contest among 36 governorships on the ballot in November. Among them are MyPillow founder and chief executive Mike Lindell, a 2020 election denier who is close to Trump; state House Speaker Lisa Demuth; Dr. Scott Jensen, a former state senator who was the party’s 2022 gubernatorial candidate; and state Rep. Kristin Robbins.

The Minnesota contest is likely to test Trump and his fellow Republicans’ uncompromising law-and-order approach and mass deportation program against Democrats’ criticisms of his administration’s tactics.

Federal agents have detained children and adults who are U.S. citizens, entered homes without warrants and engaged protesters in violent exchanges. Renee Good was shot three times and killed by an Immigration and Customs Enforcement officer in early January. On Saturday, federal officers fatally shot ICU nurse Alex Pretti during an encounter.

Many Democrats on Capitol Hill, in turn, have voted against spending bills that fund Trump’s Department of Homeland Security. A standoff over the funding could lead to a partial government shutdown.

Trump and other Republicans also will try to saddle Klobuchar — or any other Democrat — with questions about the federal investigation into Minnesota’s child care programs and its Somali community. Trump also has made repeated assertions of widespread fraud in state government, and his administration is conducting multiple investigations of state officials, including Walz. The Democrat has maintained that his administration has investigated, reduced and prosecuted fraud.

Demuth was quick to release a new video and a web page that illustrate what’s likely to be another main line of her campaign: that Klobuchar cannot be trusted to end the fraud in public programs or curb the growth of government. “Minnesotans only need to look at her record to know that she simply cannot deliver the change that our state needs, and would be nothing more than a third term of Tim Walz,” Demuth said in a statement.

Now in her fourth Senate term, Klobuchar is a former local prosecutor and onetime presidential candidate who positions herself as a moderate and has demonstrated the ability to win across Minnesota.

She won her 2024 reelection bid by nearly 16 percentage points and received 135,000 more votes than Democratic presidential nominee Kamala Harris. Harris outpaced Trump by fewer than 5 percentage points.