Here is the latest Iowa news from The Associated Press at 3:30 a.m. CST

ANKENY, Iowa (AP) — With just one week left until the caucuses, the candidates’ Iowa organizations are more important than ever. Hundreds of staffers and volunteers have fanned out across the state, knocking on doors and making calls to ensure their candidate’s supporters turn out on caucus night. Bernie Sanders’ campaign is canvassing voters in unusual locations, like trailer parks and outside CVS pharmacies. Elizabeth Warren has had some of the most seasoned staffers organizing in Iowa since the spring, and she’s hoping they’ll help her make up for lost ground in the polls. Meanwhile, Joe Biden is facing questions about how robust his organization is in smaller counties around the state.

DES MOINES, Iowa (AP) — Angered by a flag observing Transgender Day that briefly flew over the Iowa Capitol, Republican lawmakers are moving forward with a bill that would limit the types of flags state and local governments can display. Republicans on Monday moved the bill from a subcommittee to a full committee for consideration. It would allow only the flag of the United States, state of Iowa, a prisoner of war/missing in action flag and a flag of the city, county or school district from being flown at government buildings. A flag observing Transgender Day flew over the Capitol for less than five minutes in November.

SIOUX CITY, Iowa (AP) — A Woodbury County supervisor has agreed not to attend a meeting Tuesday due to a dispute over where he is registered to vote. Supervisor Jeremy Taylor said he would not attend the weekly Board of Supervisors meeting after a decision by the county auditor over which of his two homes he could use for voter registration purposes. The Sioux City Journal reports Sioux City resident Maria Rundquist had filed a legal challenge over Taylor’s use of a home as a primary residence in the city’s District 2 when he and his wife also spent time at a home in another district. Taylor accused auditor Pat Gill of partisanship in his decision.