Carly Fiorina, the former CEO of Hewlett-Packard, on Monday announced she's running for president in 2016.

Fiorina tweeted on Sunday: “Tomorrow morning I'm joining @GMA to discuss some big news. I hope you can tune in!”

“Yes, I am running for president,” she told Good Morning America's George Stephanopoulos on Monday. “I think I'm the best person for the job because I understand how the economy actually works, I understand the world, who's in it, how the world works. I understand bureaucracies, and that's what our federal government has become, a giant bloated unaccountable corrupt bureaucracy.”

In 2008, Fiorina served as an adviser to Senator John McCain's presidential campaign. Two years later, she launched an unsuccessful bid for a Senate seat.

During her Senate campaign, Fiorina defended California's ban on gay marriage, Proposition 8, saying it was “not appropriate” for a judge to overrule the will of California voters who approved the measure in 2008. Proposition 8 was struck down in 2013.