Regardless of Tuesday night's primary results in Wisconsin, Hillary Clinton's campaign is adamant that Bernie Sanders will not be able to close the gap in pledged delegates even if he scores an expected victory.

“I don’t think he can narrow the gap materially in pledged delegates in Wisconsin," Clinton chief pollster and strategist Joel Benenson told MSNBC's "Andrea Mitchell Reports" on Monday afternoon.

Benenson then explained that Wisconsin favors Sanders because it "is much less diverse than most of the states we compete in in Democratic primaries."

"It’s got a lower population of African-Americans, a very small population of Latinos. We’ve done very well in building a diverse coalition, which is why we’ve won far more primary elections than Sen. Sanders has and compiled a bigger net delegate lead in those primaries by a lot, than he has," Benenson said. "The key here in Wisconsin is to, you know, compete hard, try to win this state. But in either way this state comes out, I think it’s close enough there isn’t going to be a big shift in the 230 or plus pledged delegate advantage that Hillary Clinton has right now.”

Wisconsin allocates its 86 pledged delegates on a proportional basis.

A Fox Business poll released late last week showed Sanders with a five-point advantage over Clinton, though the spread is about two points smaller in the Real Clear Politics polling average since March 24, at 47.8 percent to 44.7 percent.