Senator Elizabeth Warren (D). (REUTERS/ CBS News/Chris Usher/Handout via Reuters )

Sen. Elizabeth Warren (D-Mass.) is helping Sen. Brian Schatz (D-Hawaii) raise money for his bid to get past his primary challenger, Rep. Colleen Hanabusa (D).

"Brian holds the same commitment as I do to make sure college is a path to opportunity, not a road to crushing debt," Warren will say in a fundraising email set to be released by Schatz's campaign Thursday morning. "He knows that student loans are stopping more and more young people from moving out of their parents' homes, starting small businesses, or making purchases that grow our economy."

Schatz recently co-sponsored a bill with Warren that would allow people with outstanding student loan debt to refinance at lower rates. Warren's PAC has previously donated money to Schatz's campaign.

The Hawaii senator also has the support of President Obama, who grew up in Hawaii and was backed by Schatz in the 2008 Democratic primary for president. Hanabusa backed Hillary Rodham Clinton.

The Schatz-Hanabusa race is deeply personal. Late-Sen. Daniel Inouye's dying wish was for Hanabusa to replace him. But Gov. Neil Abercrombie (D) decided to go a different direction, tapping his then-lieutenant governor, Schatz.

The primary is Aug. 9.