Biden may have narrowed his VP list down to Kamala Harris and Susan Rice

Former Vice President Joe Biden could be down to two contenders in his search for a running mate.

A new report from Axios details how Biden confidants believe he has narrowed his list down to Sen. Kamala Harris (D-Calif.) and former National Security Adviser Susan Rice. While the report cautions that things could change, it notes that these confidants "would be surprised if he picks anyone else."

As far as Harris goes, Axios writes that Biden's brain trust has "deep and trusting relationships" with those who are pushing for the California senator while touting her skills as a prosecutor. But on the other hand, according to the report, Rice is "getting a big bounce" from former President Barack Obama's alumni, who say that picking her would "guarantee the enthusiastic presence" of Obama and former first lady Michelle Obama on the campaign trail.

Other possible contenders include Rep. Karen Bass (D-Calif.), who the report says is in third place behind Harris and Rice, as well as Sen. Elizabeth Warren (D-Mass.) and Sen. Tammy Duckworth (D-Ill.). The Washington Post previously reported that Biden was expected to interview five or six finalists but that there was a sense that he still doesn't have "a clear favorite."

Though Biden had previously said he intended to make his running mate pick in the first week of August, the announcement is no longer expected to come until next week, prior to the Democratic National Convention's start on Aug. 17. Read more at Axios.