Hillary Clinton has cautioned the Democratic Party to prepare for what she predicts will be "a very effective attack" from Republicans utilizing anti-communist and anti-socialist messaging.

Speaking on the podcast "Pivot with Kara Swisher and Scott Galloway," Clinton referenced the recent narrow primary victory of progressive Dr. Abdul El-Sayed in Michigan over moderate Rep. Haley Stevens. She emphasized the need for Democrats to unite the party's various factions, including those who supported Stevens, to appeal to independent voters.

"The Republican messaging is ‘communist, socialist.’ It’s going to be a very effective attack," Clinton stated. "People on the left have to be prepared to answer that and be effective in answering that."

Clinton noted that former President Donald Trump is leading with this type of rhetoric and suggested it is being used because it has been tested and found to be effective. She described these tactics as "scare tactics about our candidates," though she added that such messaging did not prevent the election of progressive Mayor-elect Eric Adams in New York.

Clinton described the Democratic Party as a "bigger tent" compared to what she called the "Trump cult" of the Republican Party. However, she stressed that this broad base must translate into general election victories.

El-Sayed's win in Michigan, where he is set to face former Republican Rep. Mike Rogers in November, highlights the challenge of unifying different wings of the party. El-Sayed's platform includes policies such as "Medicare for all," abolishing ICE, ending U.S. aid to Israel, and implementing wealth taxes, which Clinton suggested could alienate moderate voters.

Clinton argued that El-Sayed's campaign will require significant outreach to supporters of Stevens and a willingness from progressive candidates and their supporters to bridge divides. She also pointed to a historical pattern where progressives have sometimes been reluctant to fully support mainstream Democratic nominees, referencing past instances like the reluctance to support Kamala Harris and herself during their respective nomination bids. "So it can’t be a one-way street," Clinton concluded.