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CNN polling analyst Harry Enten explained how the presidential race is tightening across all swing states on Friday. Enten said Kamala Harris is polling worse than Democratic predecessors Hillary Clinton and Joe Biden.

Enten zoomed in on Pennsylvania, Michigan, and Wisconsin.

“If Kamala Harris wins these three, she most likely gets to 270 electoral votes. Take a look three weeks ago, Harris was ahead by two in Pennsylvania, two in Wisconsin, three in Michigan. Look at where we are today, the race is even tighter, even tighter than it was. Today, it’s a one-point advantage in Pennsylvania, one in Wisconsin, one in Michigan,” Enten said. “Look, that’s limited movement, but in a year in which this race has been so static for talking one point movement, one point movement, two-point movements. And we see movements in all three.”

“This is the type of thing that, at least in the public polling, makes Democrats worry,” he continued. “And I think that the public polling in this case is reflected in some of that internal polling, some of that reporting that suggests that these Great Lake battleground states have certainly tightened a lot where at this point they are way too close to call.”

“We’re going to look at an average across these three states, right? Michigan, Pennsylvania and Wisconsin, an average on October 11th, what do you see? Well, if you look eight years ago, Hillary Clinton was way out in front in an average of these three, she was up by eight,” Enten said. “You go four years ago, Joe Biden was up by an average of seven points across these three Great Lake battleground states, yet come today, it’s just a one-point advantage for Kamala Harris across these three Great Lake battleground states.”

Watch the clip below: