"Let's be honest. It's going to be ugly", Harris told MSNBC's Mika Brzezinski in an interview at an event in San Francisco on Saturday.
Democrat Kamala Harris, the first Indian-American to serve in the US Senate, said she will make a decision about a potential 2020 presidential bid during the upcoming holiday season. "And over the holiday, I will make that decision with my family".
"When you break things, it is painful", she continued.
If she decides to run for president, she'll face what is expected to be a crowded Democratic field.
The list of Democratic senators who are mulling over their own challenge to Trump in 2020 is continuing to grow.
Sen. Kamala Harris has made a name for herself in the Senate with her tough questions against figures like former Attorney General Jeff Sessions.
The 2020 campaign is already heating up, and California Senator Kamala Harris could be one of the first serious candidates for President to throw her hat in the ring..
Several other senators, including Cory Booker of New Jersey, Bernie Sanders of Vermont and Elizabeth Warren of MA, are expected to launch bids, along with former Vice President Joe Biden.