Sen. Amy Klobuchar is set to reveal whether she will run for president at a rally Sunday in Minneapolis.
The Democratic senator from Minnesota will make her announcement at a 1 p.m. event at Boom Island Park, across the Mississippi River from downtown Minneapolis.
A spokeswoman said Tuesday that Klobuchar would not say until the event itself whether she will seek the Democratic presidential nomination in 2020. A news release says only that Klobuchar will make a "major announcement" to a crowd of Minnesotans and supporters.
The field of potential challengers to President Donald Trump is large and growing, and a number of Klobuchar's allies and advisers believe she is joining the race.
"Yes, I would like to see her run," Gov. Tim Walz said in a recent interview. "I think she brings a leadership style that is reflective of the Midwest, reflective of the values and the best of Minnesota. She is popular and is a very hard worker."
Klobuchar has stated in numerous recent interviews and TV appearances that she is considering a presidential bid. She went so far as to say that her family was on board with a national campaign.
Klobuchar has also described a political rationale for her candidacy: She's a popular senator from the Midwest, a region where Trump flipped several usually Democratic-leaning states in 2016.
"I think you need people who can relate to the Midwest," Klobuchar told the Star Tribune in early January. First elected to the Senate in 2006, Klobuchar racked up big winning margins in all three of her statewide runs. Last year, she carried 43 Minnesota counties that Trump had carried just two years earlier, on her way to winning a third term.