Democratic strategist: Warren 'needs to have her armor on' for fourth primary debate

Democratic strategist Andrew Feldman warned Monday that Sen. Elizabeth WarrenElizabeth Ann WarrenButtigieg surges ahead of Iowa caucuses Biden leads among Latino Democrats in Texas, California Following school shooting, Biden speaks out: 'We have to protect these kids' MORE (D-Mass.) needs to be prepared for attacks on all fronts in the fourth Democratic presidential debate this week in Ohio.

“Elizabeth Warren needs to have her armor on, because I think that people are going to come after her,” Feldman, founder of progressive firm Feldman Strategies, told Hill.TV.

“Everyone’s going to be coming at Elizabeth Warren,” he added.

Feldman’s comments come a day after Sanders, in a rare move, highlighted a key difference between him and Warren’s economic philosophies.

Sanders told Jonathan Karl of ABC News that Warren is “capitalist through her bones,” and asserted that he is the only presidential contender who will challenge corporate greed in Washington.

"I am, I believe, the only candidate who's going to say to the ruling class of this country, 'Enough. Enough with your greed, and with your corruption. We need real change in this country,'" Sanders said over the weekend.

Both Sanders and Warren have steered clear of direct attacks on each other, but Warren has been gaining momentum in recent months as both candidates look to win over the progressive portion of the party's base.

The RealClearPolitics polling index shows Warren in second place with 26 percent support among Democratic voters, followed by Sanders with 15 percent support.

Some statewide polls show Warren running neck-and-neck with former Vice President Joe BidenJoe BidenButtigieg surges ahead of Iowa caucuses GOP eager for report on alleged FBI surveillance abuse Biden leads among Latino Democrats in Texas, California MORE, the Democratic primary front-runner.

According to a new CBS poll, Biden and Warren are each tied at 22 percent among Iowa voters for the top spot.

The same CBS survey showed that Warren leads Biden by 8 percentage points, with 32 percent support, in New Hampshire, another early voting state.

The top 12 candidates are slated to take the debate stage on Tuesday night in Ohio. 

—Tess Bonn