Weaver continued: "Sen. Sanders is conversing and in good spirits".
But there could also be an upside to going away for a few days and returning in dramatic fashion.
In the third quarter, the campaign and the RNC raised $125 million, bringing the 2019 total to $308 million and giving them $156 million in the bank. The presidential hopeful is canceling forthcoming events and appearances until further notice.
Democratic presidential candidate Sen.
Alec Baldwin's Trump Returns For SATURDAY NIGHT LIVE Cold Open
Donald Jr. was a bit more helpful, until Eric blurted out over the open phone line about the whole "treason" thing. Yang says with a chuckle: "That's easy!" and suggests sending whistleblowers to the bottom of the ocean.
His campaign manager, Faiz Shakir, spoke to supporters on Tuesday night but didn't mention any health issues, according to The Associated Press.
Massachusetts Senator Elizabeth Warren tweeted that she hoped "to see my friend back on the campaign trail very soon".
Sanders was in Las Vegas for a memorial ceremony on the two year anniversary of the largest gun massacre in US history.
Which leaves Warren, who wished Sanders a speedy recovery, as the only top-tier candidate running at full throttle.
Biden leads on 26.1 percent with Warren second on 24.4 percent.
It is unknown at this time where Sanders is receiving treatment. During the 2016 campaign, Sanders released a letter from his doctor indicating he had no heart disease.
If he were to clinch the presidency, Sanders would become the oldest person to ever hold the nation's highest office.