Top names include Sens. Ted CruzRafael (Ted) Edward CruzWith religious liberty memo, Trump made America free to be faithful again Interstate compacts aren't the right way to fix occupational licensing laws Texas Dem: ‘I don’t know what to believe’ about what Trump wants for wall MORE (Texas), Rand PaulRandal (Rand) Howard PaulNSA spying program overcomes key Senate hurdle Fix what we’ve got and make Medicare right this year Despite amnesty, DACA bill favors American wage-earners MORE (Ky.) and Marco RubioMarco Antonio RubioOvernight Cybersecurity: Bipartisan bill aims to deter election interference | Russian hackers target Senate | House Intel panel subpoenas Bannon | DHS giving 'active defense' cyber tools to private sector Senators unveil bipartisan push to deter future election interference Puerto Rico's children need recovery funds MORE (Fla.), along with Wisconsin Gov. Scott Walker.

Several other possible 2016 Republican contenders have signed on as sponsors, though they will not attend the event in person: New Jersey Gov. Chris Christie, Louisiana Gov. Bobby Jindal and Rep. Paul RyanPaul Davis RyanGOP leaders pitch children's health funding in plan to avert shutdown Lawmakers see shutdown’s odds rising Fix what we’ve got and make Medicare right this year MORE (Wis.).

The fundraiser reception will take place in September at the Capitol Hill Club, according to The Des Moines Register. The dinner will be held at the home of Republican Ron Kaufman, a senior adviser to Mitt Romney’s 2012 presidential campaign.

Branstad is raising cash for his reelection in 2014, although he has not yet officially declared his bid.

Iowa is a politically important state rich in donors and campaign cash. Potential GOP presidential prospects are already courting the Hawkeye State. 

Paul visited the state for an Iowa GOP fundraiser in May; Cruz and Paul spoke to a group of evangelical conservative pastors in Des Moines in July; former Sen. Scott Brown (Mass.) visited the Iowa State Fair earlier this month; and Ryan, the GOP’s 2012 vice presidential nominee, will be the keynote speaker for Branstad’s 67th birthday fundraiser in Iowa this fall.