Harris on 2020: I haven’t even decided on dinner tonight

Sen. Kamala HarrisKamala Devi HarrisMcConnell: I won't be intimidated by protesters Booker seizes on Kavanaugh confirmation fight Seeking asylum does not make illegal entry into America legal MORE (D-Calif.) dodged questions Tuesday about whether she's weighing a presidential bid, saying that she doesn't "even know what I'm having for dinner."

She was asked by MSNBC's Lawrence O'Donnell if her decision to co-sponsor a single-payer health care bill led by Sen. Bernie SandersBernard (Bernie) SandersOcasio-Cortez to campaign with Bernie Sanders in Kansas Sanders: Trump should confront Putin over Mueller probe indictments Booker seizes on Kavanaugh confirmation fight MORE (I-Vt.) signaled that she might mount a White House run of her own in 2020.

"The reason that I am supporting Medicare for all is really pretty basic, which is that it's, I believe, the moral and ethical right thing to do," she said. "And to do otherwise means to have a system where we're just not being smart."

"Well, I guess you'll just continue to think about what you might do in 2020 and we can talk about it the next time," O'Donnell said. 

"Lawrence, I don't even know what I'm having for dinner," Harris replied, before bursting out into laughter. 

Harris, a former California attorney general who entered the Senate in January, has been among the lawmakers rumored to be potential contenders for the Democratic presidential nomination in 2020.

Sanders, an independent who sought the Democratic nomination in 2016, pushed the notion of a single-payer "Medicare for all" health care system on the campaign trail. He is also a rumored contender for the 2020 nomination.