Sen. Elizabeth Warren Explains Why She Left GOP

" ... a party that said, 'No, it's not about a level playing field, it's now about a field that's gotten tilted.'"

Appearing on ABC's This Week with George Stephanopoulos, a little-known fact was revealed: Sen. Elizabeth Warren (D-MA) was a registered Republican in the early 90s. She explained to host Stephanopoulos why she left the party to become a Democrat:

I was originally an Independent. I was with the GOP for a while because I really thought that it was a party that was principled in its conservative approach to economics and to markets and I feel like the GOP party just left that -- that they moved to a party that said, "No, it's not about a level playing field, it's now about a field that's gotten tilted." And they really stood up for the big financial institutions, when the big financial institutions are just hammering middle-class American families. You know, I just feel like that's a party that moved way, way away.

Warren was on the program to pitch her book "A Fighting Chance" -- which Stephanopoulos described as retelling some "tense moments" with the Obama administration. Of Obama, he asked, "Has he fallen short in your estimation?" Warren responded:

I make no secret out of my differences with the administration and how they've treated the large financial institutions. But at the same time, as I talk about extensively in the book, I thought the consumer agency that would keep people from getting cheated on credit cards and mortgages -- if we hadn't had President Obama in the White House, who stood up strong for that agency, who fought for that agency, we never would have gotten it into law. And I think that's powerfully important.

On Hillary Clinton running for president in 2016, Stephanopoulos asked if she was Warren's candidate. Warren would only say, "Hillary's terrific," and that she hoped she will run.