Sen. Bernie SandersBernie SandersTrump thought biker rally crowd would resemble ‘I Have a Dream’ speech Sanders supporter challenges Wyo. delegate allocation Snowden mocks Trump for refusing to debate Sanders MORE (I-Vt.) won't rule out a presidential bid if no other liberal candidate steps up to run — but suggested Sen. Elizabeth WarrenElizabeth WarrenSanders: Clinton with a moderate VP would be a 'disaster' Verizon, striking unions reach agreement in principle What Bernie needs to do right now MORE (D-Mass.) could fit the bill.
Sanders tells the Burlington Free Press that he'd prefer not to run, but if no one else steps up to challenge the "establishment politicians" in 2016, he may feel compelled to.
He indicated Sen. Elizabeth Warren (D-Mass.) might earn his backing if she were to run, however.
"I like Elizabeth Warren very much," he said. "Her beauty is that she is very smart. She speaks English. She can explain economics in a way that everybody can understand."
Sanders has previously said he hasn't ruled out a run but put the odds of that happening at 1 percent.
Sanders said if he did run for president he would "probably" run as an independent rather than a Democrat.