On CBS' Face the Nation Sunday, host Bob Schieffer asked why no other Democrat has come out to run against Hillary Clinton.

Former Maryland Gov. Martin O'Malley was on the receiving end of that question and is the only Democrat currently considering throwing his hat into the ring.

"Do you think that having more candidates is good for the Democratic Party?" Schieffer asked.

"You mean like more than one?" O'Malley quipped.

Schieffer continued in bewilderment:

I mean, I sit here and look at this -- here's a party that won the last two presidential elections, and yet it comes down to -- there seems to be this one candidate. Shouldn't there be more people out there? Shouldn't the party of -- why is there nobody but you? I don't mean this in a deprecating way towards you, but you seem to be the lone guy who's even thinking about challenging her right now.

O'Malley said isn't sure why that is the case and added that "it would be an extreme poverty" for no one to challenge Clinton.

"Look, this is the way I think it's supposed to work," he said. "I believe that if you have the executive experience, the ideas that can serve our nation well, and the ability to govern, you should offer your candidacy and then let the people decide."

"If we do that," he continued, "then we can be the party that leads our country into the future. But we won't do it unless we offer ideas for the future and break with things like bad trade deals, the systematic deregulation of Wall Street that many Democrats were complicit in and helped get us into this mess."

In an interview that will air in full Monday on NPR, O'Malley slammed Clinton as "inauthentic" and "not transparent" and without the ability to connect to younger voters. He also opposed the Republican belief that government regulation is bad for small businesses and the economy. He said:

It is not true that regulation holds poor people down or regulation keeps the middle class from advancing. That's -- kind of -- patently bullsh*t.