Troy Price, the Iowa Democratic Party's Chairman, says Governor Reynolds and her fellow Republicans are engaged in a "budget-busting free-for-all" for corporate donors.
Because an unborn baby's heartbeat is detectable by about six weeks of pregnancy, the bill would prohibit nearly all abortions in Iowa.
"Here we are at 1:05 in the morning pushing a bill that has absolutely no constitutional chance of ever passing muster", said McCoy.
"We are alive when our hearts start beating and our life is over when it stops", Republican Representative Dawn Pettengil told CBS News. But a provision in that legislation requiring a three-day waiting period for abortions - according to an AP analysis, among the longest wait periods in the country - was challenged in court.
The new legislation does have its own exemptions which allows for abortions after the 6-week period in extreme cases, such as saving the mothers life or more extreme cases such as rape or incest. Rick Bertrand, a Republican from Sioux City, said during the floor debate. In March, legislators in OH introduced a bill that would ban all abortions, with no exceptions.
The "heartbeat" bill now heads to the desk of Republican Gov. Kim Reynolds for final approval. "My Republican colleagues, this is the vote of your career".
The bill provides immunity to women receiving abortions but not to doctors who perform them.
But pro-abortion Democrats argued the legislation will cost the state millions of tax dollars in lawsuits, and infringe on women's so-called "right to choose".
The American Civil Liberties Union condemned the bill's passage, saying in a statement that it would "take Iowa women back almost a half century". MS passed a law earlier this year banning abortions after 15 weeks of pregnancy, but it's on hold after a court challenge.
The U.S. Supreme Court has denied hearing the case of a similar law from North Dakota in recent years. The exception to the law would be rape or incest, and if it's reported to authorities within 45 days.
"Middle-class and upper-class women always have access", she said. It's time for the Supreme Court to weigh in on the issue of life. "I believe this bill will be the vehicle that will ultimately provide change and provide the opportunity to overturn Roe v. Wade".
Beyond the Iowa Capitol in Des Moines, the bill drew fierce criticism from abortion rights advocates and effusive praise among abortion opponents.
"I believe arguments of the accreditation, while well-intentioned, are specious ..." said Rep. Jon Jacobsen, R-Treynor.
Democrats also said because the bill doesn't specify civil and criminal immunity for doctors who violate the law, it could open up doctors to criminal prosecution for performing abortions.
But it is unconstitutional, said Rep. Beth Wessel-Kroeschell, D-Ames, and the Supreme Court has twice refused to hear similar cases.