This forced her to cancel campaign appearances in Riverside and Coachella Tuesday. She missed a scheduled appearance in San Diego on Wednesday, but campaign officials said the candidate remained upbeat and optimistic about getting voters to the poll Nov. 2.
Fiorina's campaign released an update saying, "This morning, her doctors gave her the good news that she will be released from the hospital today and can resume her busy campaign schedule tomorrow. Carly is grateful for the outpouring of well wishes and prayers from so many Californians."
Meanwhile, they have also released a new ad called "Truthiness," attacking opponent Sen. Barbara Boxer's statements.
First lady Michelle Obama was in L.A. for Maria Shriver's The Women's Conference Tuesday and a Boxer fundraiser Wednesday. Obama said Boxer's re-election is pivotal to move forward with the president's agenda.
"She has been working day and night to create jobs here in California--construction jobs and clean energy jobs. Good jobs that pay good wages that folks can raise a family on, right?" said Obama.
Boxer raised $150,000 at the fundraiser. She was at Plummer Park in West Hollywood Wednesday afternoon to campaign.
The Senate race between Boxer and Fiorina remains very close. The results from an exclusive Eyewitness News Survey USA poll, taken before the news of Fiorina's hospitalization, shows that incumbent Boxer has 45 percent of the votes while Fiorina has 40 percent. Fifteen percent of those polled said they were still undecided or plan to vote for another candidate.