DES MOINES — With the Iowa State Fair attendees taking the measure of 2020 Democrats, some say they’re increasingly concerned about former Vice President Joe Biden’s verbal gaffes and mistakes on the stump.

“Well, I like Biden, he just keeps saying dumb stuff. He feels comfortable in interviews, but his staff just needs to really consider what they’re letting him say,” said George Alberson, a 62-year-old retiree. “People I know still like Biden. Whether that’s predicated on the facts, I have no idea.”