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

DES MOINES, Iowa (AP) — After a long campaign, it’s finally time to vote. Polls will be open from 7 a.m. to 9 p.m. Today (Tuesday), but voters have been casting early ballots for weeks. More than 300,000 of Iowa’s 2.1 million voters have opted to vote early. There are plenty of candidates on the ballot, including the presidential race between Republican Donald Trump and Democrat Hillary Clinton, the Senate election between Republican Charles Grassley and Democrat Patty Judge, four congressional races and legislative contests.

DES MOINES, Iowa (AP) — More than nine months after Iowa held its lead-off caucuses, beginning an extended and, at times, bizarre presidential selection process, voters Tuesday will weigh in once again on who should lead the country. Iowa voters also will decide whether to re-elect longtime U.S. Sen. Charles Grassley and the state’s four congressmen, and which political party should control the state House and Senate.

CUSHING, Okla. (AP) — Oklahoma regulators say they will shut down some disposal wells and reduce volume in others after a magnitude 5.0 earthquake struck near Cushing on Sunday night. The Oklahoma Corporation Commission’s Oil and Gas Division said Monday that more than 700 square miles are included in the new area, but specific details wouldn’t be released until Tuesday. Wastewater from oil and gas production is injected into the disposal wells.

WEST DES MOINES, Iowa (AP) — About 1,500 law enforcement officers joined more than 1,000 other mourners at a funeral for a one of two Iowa police officers who were fatally shot just minutes apart last week. Officers slowly filed into a church Monday in West Des Moines to remember Des Moines police Sgt. Anthony Beminio. The 38-year-old was fatally shot early Wednesday, just minutes after Officer Justin Martin was killed in nearby Urbandale. A local man has been charged in both deaths.