Here is the latest Iowa news from The Associated Press at 3:50 a.m. CST

SIOUX CITY, Iowa (AP) — A second Republican has announced he’ll challenge embattled Iowa Rep. Steve King in the 2020 primary. The Sioux City Journal reports that 40-year-old Jeremy Taylor, a Woodbury County supervisor and former state legislator, announced his candidacy for Iowa’s 4th Congressional District in a news release Thursday. Earlier this month, GOP state Sen. Randy Feenstra announced he’ll challenge the longtime congressman in the primary.

MINNEAPOLIS (AP) — An arctic wave has wrapped the Upper Midwest in numbing cold. But the worst may be yet to come. The deep freeze caused organizers of the Winter Carnival in Minnesota to cancel several events, including Thursday night’s parade through downtown St. Paul. Sioux Falls, South Dakota, has closed its six outdoor skating rinks because of the cold weather. Forecasters say the frigid weather is expected to linger into next week, with even colder temperatures midweek.

IOWA CITY, Iowa (AP) — An eastern Iowa county agreed to pay $50,000 to settle a civil rights lawsuit against its top prosecutor last month, days before he applied for a seat on the Iowa Supreme Court. The payment settles a lawsuit filed against Muscatine County Attorney Alan Ostergren over his two-year prosecution of West Liberty City Manager Chris Ward that an appeals court eventually found unjustified.

DES MOINES, Iowa (AP) — An Iowa court judge has struck down a portion of a 2017 voting reform law that requires county election officials to call, write or email voters who do not completely fill out an application for an absentee ballot. The law was written to say county officials must use the best means available to find missing information.