Several politicians thought to be in consideration as Mitt Romney’s running mate have joined the presumptive GOP presidential nominee at a Utah retreat.

More than 500 individuals are expected to attend the event with big Romney donors in Utah, according to a report in Bloomberg.

Former Gov. Tim Pawlenty (Minn.), Sen. Rob PortmanRobert (Rob) Jones PortmanFighting the opioid epidemic: Congress can't just pass laws, but must also push to enforce them The Hill's Morning Report - Presented by JUUL Labs - House to vote to condemn Trump tweet Rising number of GOP lawmakers criticize Trump remarks about minority Dems MORE (Ohio), Rep. Paul RyanPaul Davis RyanTrump quietly rolled back programs to detect, combat weapons of mass destruction: report Ocasio-Cortez top aide emerges as lightning rod amid Democratic feud Juan Williams: GOP in a panic over Mueller MORE (Wisc.), Gov. Bobby Jindal (La.), Gov. Bob McDonnell (Va.), and Sen. John ThuneJohn Randolph ThuneGOP rattled by Trump rally GOP wants commitment that Trump will sign budget deal Poll: McConnell is most unpopular senator MORE (S.D.) will be among the attendees, according to ABC News.

ADVERTISEMENT
The 2008 GOP nominee Sen. John McCainJohn Sidney McCainMichelle Obama weighs in on Trump, 'Squad' feud: 'Not my America or your America. It's our America' Meghan McCain shares story of miscarriage Media cried wolf: Calling every Republican a racist lost its bite MORE (Ariz.), former Gov. Jeb Bush and former secretaries of state Condeleeza Rice and James Baker III are also joining the event, according to Bloomberg’s report.

Notably absent will be Sen. Marco RubioMarco Antonio RubioUS-Saudi Arabia policy needs a dose of 'realpolitik' Media cried wolf: Calling every Republican a racist lost its bite Rubio criticizes reporters, Democrat for racism accusations against McCain MORE (Fla.) who is thought to be among the top veep options for the GOP presidential hopeful, according to the Wall Street Journal. Rubio told the Journal he wanted to spend the time with his kids.

Attendees flew to Salt Lake City Thursday night and went to a cookout at Olympic Park Friday night, according to ABC News. Chateaux at Silver Lake, a hotel, is hosting the event, Bloomberg reported.

The event will be a who’s who of the GOP party and is sure to be an attractive event for donors. Fundraising events are key for donors to get their time to hob-nob with the leaders the are supporting.

This retreat is no different. Campaign and party heads such as former White House advisor and American Crossroad super-PAC founder Karl Rove will field private meetings with donors and offer lectures on several issues like foreign policy, Bloomberg reported.