Despite concerns that Biden’s campaign was losing steam, he has routinely topped his competitors among Democratic primary voters.

Klobuchar is trying to lure independent voters and Republicans disenchanted with Trump’s actions while in office.

"It's with profound gratitude to all of our supporters that I suspend my campaign for president today."

"Or I’d do what I do best, I’d try the case."

Gallup says political polarization in America also increased significantly over the past 10 years.