It's not easy to make a Duffy dynasty.  

Transportation Secretary Sean Duffy's son-in-law's quest to be elected to the same Wisconsin House seat the former reality TV star once held has prompted grumbling among Republicans in the district - with a pack of GOP candidates unwilling to bow out. 

Duffy, a veteran of the Real World franchise and a former congressman, has been boosting son-in-law Michael Alfonso 'in his personal capacity,' Transportation spokesperson Nathaniel Sizemore told the Daily Mail. 

But Republicans aligned with Alfonso's rivals have complained that Duffy helped secure an endorsement from President Donald Trump in January for the 26-year-old, who is married to Duffy's daughter, Evita.

Axios reported Wednesday that Duffy and his wife, Fox News Host Rachel Campos-Duffy, irritated senior White House officials by not giving them a heads-up before pushing the President to endorse Alfonso. 

The story quoted Meg Ellefson, a podcaster and prominent former drive-time radio show host in Wisconsin, hitting Duffy for 'exploiting his Cabinet position and fame to influence an election and hand one of the nation's offices to his unqualified, 26-year-old son-in-law.'

Ellefson added that she was 'utterly disgusted by this blatant manipulation of voters' and is backing one of Alfonso's primary rivals. 

Critics have pointed to campaign contributions Alfonso has received from transportation interests, suggesting those donations were made to lobby Duffy. 

Alfonso was also given $1 million from Duffy's former Congressional campaign fund to aid with his run. 

Trump's endorsement surprisingly didn't clear the field. 

Last week, accountant Don Raihala entered the fray. 

Already, besides Alfonso, Jessi Ebben, Kevin Hermening, Niina Threlfall-Baum and Cheryl Ann Runkel were running on the GOP ballot.

Ebben, a public relations professional, tried unsuccessfully to push Alfonso and Hermening off the ballot, arguing to the Wisconsin Elections Commission that a new state law and an old form those candidates used to garner signatures invalidated their campaigns, according to Wisconsin Public Radio. 

Earlier this week, the Wisconsin Election Commission rejected Ebben's challenge. 

The seat is open because its current occupant, Republican Representative Tom Tiffany, is running for Wisconsin governor with Trump's blessing.  

Wisconsin's 7th Congressional District is a safe GOP seat, leaning +11 Republican, according to the Cook Political Report. 

That means whichever Republican wins the August 11 primary almost certainly holds the seat for the party in November. 

Trump's visit to a nearby district last week renewed interest in the Wisconsin races. 

Alfonso was on hand at the President's event alongside his wife, Evita, and the couple's newborn baby, Rosita. 

'Little Rosita handled the campaign hustle like a pro!' Alfonso wrote in a social media post. 

The couple clearly has a personal relationship with Trump too. 

The President, along with First Lady Melania Trump, made an appearance at Alfonso and Evita's 2022 wedding, which was held at Trump's Bedminster, New Jersey golf resort. 

In his endorsement post in January, Trump called Alfonso a 'young STAR' and a 'MAGA warrior.' 

Alfonso's spokesperson, Max Docksey, did highlight the Trump endorsement in a statement to the Daily Mail, but argued the candidate's support was much broader than that.

'He has earned support from conservative leaders, including a majority of Wisconsin's congressional delegation, and from grassroots supporters across the district and country,' Docksey said. 'Every decision he makes will be driven by one priority: fighting to put the people of Wisconsin's 7th District first.' 

Sizemore, the Transportation spokesperson, said Duffy follows the rules before attending any campaign or fundraising events on behalf of his son-in-law.

'Before attending any event, career ethics officials at USDOT screen these events, review the hosts, advise on attendees, and provide recommendations that Secretary Duffy follows,' Sizemore told the Daily Mail. 'These processes and rules have existed for decades.' 

'Whether it's installing a brand-new air traffic control system, transforming Penn Station, kicking dangerous truck drivers off the roads, or making cars more affordable again, Secretary Duffy uses the power of DOT to execute on the President's ambitious transportation agenda. That's it,' Sizemore added.