Here is the latest Iowa news from The Associated Press

OTTUMWA, Iowa (AP) — Democratic presidential candidate Bernie Sanders says his Iowa organization has picked up steam in recent months. The Vermont senator and 2016 hopeful appeared Thursday at a campaign office opening in Ottumwa. People packed inside the building and spilled out onto the street, enthusiastically cheering his appearance.

MADISON, Wis. (AP) — The first television ad backing Republican Governor Scott Walker’s presidential campaign to begin airing in Iowa next week highlights his 2011 battle with public sector unions. The 60-second ad was released Thursday by the Unintimidated super PAC that has announced it is spending $17 million in the next six months on an ad campaign backing Walker.

WASHINGTON (AP) — Donald Trump ruled out a possible third-party White House bid Thursday and vowed to support the Republican Party’s next presidential nominee — whoever that may be. To the dismay of Republican leaders, Trump has emerged as the overwhelming front-runner in the party’s crowded field of candidates.

DUBUQUE, Iowa (AP) — Court documents show an Iowa man charged with sexually assaulting and killing a woman told police that she simply was “in the wrong place at the wrong time.” The Telegraph Herald reports that 19-year-old Helmon Betwell is charged with murder, sexual assault and two counts of burglary. He made an initial appearance Wednesday in court, where his bond was set at $1 million.