The 13 lawmakers who received campaign donations from former Alaska Gov. Sarah Palin (R) have one thing in common — none of them got advance notice the checks were coming.

Palin distributed $65,000 to candidates during the first half of this year, according to a Federal Election Commission (FEC) filing this month by Sarah PAC, Palin's political action committee.

But the lawmakers who received donations said they never heard from the 2008 Republican vice presidential nominee — and possible 2012 presidential candidate — or her representatives about the money.

"The check showed up; there was no discussion ahead of time," said a spokesman for the campaign of Rep. Vicky Hartzler (R-Mo.), one of 11 House Republicans and two GOP senators to receive donations.

The contributions were unsolicited and unheralded, according to the lawmakers who received the donations and their campaign committees.

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Palin doled out the maximum $5,000 to 13 incumbent Republicans: Sens. Bob CorkerRobert (Bob) Phillips CorkerWhat Trump’s NATO defense plan would mean for the US Overnight Health Care: Watchdog finds Tom Price improperly used funds on flights | Ex-Novartis CEO sent drug pricing proposal to Cohen | HHS staffers depart after controversial social media posts HHS staffers depart after controversial social media posts: report MORE (Tenn.) and Roger WickerRoger Frederick WickerGOP senators introduce resolution endorsing ICE Hillicon Valley: Lawmakers eye ban on Chinese surveillance cameras | DOJ walks back link between fraud case, OPM breach | GOP senators question Google on Gmail data | FCC under pressure to delay Sinclair merger review Top Senate Republicans question Google over Gmail data practices MORE (Miss.) both received donations, as did Reps. Lou BarlettaLouis (Lou) James BarlettaElection Countdown: Latest on the 2018 Senate money race | Red-state Dems feeling the heat over Kavanaugh | Dem doubts about Warren | Ocasio-Cortez to visit Capitol Hill | Why Puerto Ricans in Florida could swing Senate race Midterm turnout surges for both parties Poll: Incumbent Dem leads Pennsylvania Senate race by 15 MORE (Pa.), Larry BucshonLarry Dean BucshonLawmakers worry about rise in drugged driving Title X Family Planning proposed rule takes an important step forward in protecting unborn life Combatting our opioid crisis with comprehensive treatment centers MORE (Ind.), Ann Marie Buerkle (N.Y.), Francisco "Quico" Canseco (Texas), Mike Coffman (Colo.), Sean DuffySean Patrick DuffyProxy advisors do need to be regulated Fox News contributor: Black people tell me conditions in border detention centers 'are better than some of the projects' Trump mocks 'elites' at campaign rally MORE (Wis.), Renee Ellmers (N.C.), Mike Fitzpatrick (Pa.), Martha RobyMartha Dubina RobyElection Countdown: Latest on the 2018 Senate money race | Red-state Dems feeling the heat over Kavanaugh | Dem doubts about Warren | Ocasio-Cortez to visit Capitol Hill | Why Puerto Ricans in Florida could swing Senate race Election Countdown: Calls to abolish ICE test Dem candidates | First round of House GOP 'Young Guns' | How Tester is handling Trump's Montana visit | Dem candidate won't back Schumer as leader | Super PACs ramp up Missouri ad buys Trump invokes Pelosi in endorsing Alabama Republican ahead of runoff MORE (Ala.), Allen West (Fla.) and Hartzler.

The contributions were all made on the penultimate day of the second quarter, June 29, with the exception of one sent to Coffman, which was a debt retirement check sent Jan. 31.

All of the House members were from the freshman class of Republicans, with the exception of Coffman. (Fitzpatrick is technically a freshman member, despite having previously served in Congress.)

In Coffman's case, he received a check in January as a replacement for a campaign contribution he'd received from Palin last fall, but had lost. The check was subsequently voided, and Sarah PAC wrote his campaign another check to help pay down his debt.

That check arrived, unaccompanied by a note or anything else, in an envelope sent to Coffman's personal mailing address in Colorado.

"She just sent it to my house," Coffman said. "It just said 'Sarah PAC' ... that was unsolicited."

In the cases of Corker and Wicker, Palin's contributions are especially head-scratching for political observers because of the ire both members have drawn from the right. Wicker has long been known as an advocate of so-called pork projects, and conservatives bristled at Corker's work with then-Sen. Chris Dodd (D-Conn.) last year on Wall Street reform legislation. (Corker eventually bailed from talks.)

"Wicker and Corker in particular make exciting prospects for the Tea Party movement," wrote Erick Erickson, the head of the influential conservative blog RedState, the day after last fall's election.

A spokesman for Sarah PAC did not respond to emails seeking an explanation as to the former governor's contributions.

Contributions by the PACs of potential presidential candidates aren't unusual; they are given to help curry favor and — hopefully — endorsements.

Romney's Free and Strong America PAC, for instance, dispatched a combined 159 donations to campaign committees and to House and Senate candidates.

But recipients of Palin's campaign cash said they're not any more inclined to endorse the former Alaska governor for president (if she runs) compared to any other candidate because of their donations.

"Nope," said West, the beneficiary of a Palin endorsement during a key point last cycle, and the recipient of a donation this cycle, of whether he's likely to back Palin for president. "I think that her donating to me means she's supporting me."