* Oh. My. God…

On Monday afternoon, POLITICO posed a lengthy set of questions about charging the government and his campaign tens of thousands of dollars in questionable mileage reimbursements.

“Today, I am announcing my resignation as a Member of the United States House of Representatives effective March 31,” Schock said in a statement. “I do this with a heavy heart. Serving the people of the 18th District is the highest and greatest honor I have had in my life. I thank them for their faith in electing me and letting me represent their interests in Washington. I have given them my all over the last six years. I have traveled to all corners of the District to meet with the people I’ve been fortunate to be able to call my friends and neighbors.”

“But the constant questions over the last six weeks have proven a great distraction that has made it too difficult for me to serve the people of the 18th District with the high standards that they deserve and which I have set for myself. I have always sought to do what’s best for my constituents and I thank them for the opportunity to serve,” he said in a statement.

*** UPDATE 1 *** Politico appears to have had him busted cold…

When Schock transferred the SUV to an Illinois dealership in 2014, it had 81,860 miles on the odometer, the documents show. However, between January 2010 and the end of July 2014, he billed the federal government for 123,131 miles driven in his personal vehicle. During the same time period, the Republican billed his “Schock for Congress” campaign account and GOP Generation Y Fund, his leadership political action committee, for another 49,388 miles.

Altogether, Schock sought reimbursement for 172,520 miles on his car, despite the fact that he signed documents that certified the vehicle traveled less than half that distance.

Schock had no other vehicles registered in his name at the time, according to state public records. Multiple sources familiar with his office operations say he only drove the Tahoe during this period.

In November 2009, less than a year after Schock took his seat in Congress, the lawmaker bought the 2010 Tahoe from Green Chevrolet in Peoria. The dealership is owned by Jeff Green, a contributor to Schock who has flown the congressman around his district in his airplane and helicopter.

…Adding… The next step is the governor sets a special election date. Recent specials via our friend Aviva Bowen…

IL-14 (Foster to replace Hastert); IL-Sen (Kirk to replace Obama, er, Burris); IL-5 (Quigley to replace Rahm); IL-2 (Kelly to replace Jackson Jr)

MORE: The governor has five days from the date of the vacancy to choose an election date. The general election has to be held within 115 days from the day the governor makes his decision. The primary can be held at any point in between. That’s up to the governor.

…Adding More… Crain’s has a nifty little downfall timeline. Click here. It doesn’t include the AP story from earlier today, but you’ve already seen that one.

*** UPDATE 2 *** Gov. Rauner…

This is a sad day for the people of Illinois and the 18th District.

It’s expected that he will say something more in Bloomington today.

*** UPDATE 3 *** Speaker Boehner…

“With this decision, Rep. Schock has put the best interests of his constituents and the House first. I appreciate Aaron’s years of service, and I wish him well in the future,” Boehner said in a statement issued by his office.

Sen. Durbin…

“The allegations against Congressman Schock are serious, raising questions about his expenditure of official funds and campaign funds. His resignation came as a surprise and reflects the gravity of his situation.”

*** UPDATE 5 *** IL GOP Chairman Tim Schneider…

“Honesty and integrity are of utmost importance when serving the public. Today is an unfortunate day for the people of the 18th Congressional District, the State of Illinois, and the Illinois Republican Party.”

*** UPDATE 6 *** AP…

Schock did not inform any House leaders before making his decision.

The Office of Congressional Ethics is an outside panel that reviews ethics complaints against House members and makes recommendations to the House Ethics Committee.

A person who received a letter from the panel said the OCE was interested in conducting an interview and reviewing any relevant documents. At least two other Schock associates received similar letters, the person said. The Schock associate asked not to be identified because the ethics panel’s actions are confidential.

*** UPDATE 7 *** Senator Darin LaHood (R-Peoria)…

“It is a sudden development. It is clear to me Congressman Schock believes he is doing what is best for the people of the 18thDistrict at this time. We appreciate his efforts on behalf of our constituents and our communities.

“I will be evaluating the full impact of this decision in the next few days.”

*** UPDATE 8 *** U.S. Rep. Rodney Davis …

“Aaron is a friend and this is a sad day for the Illinois delegation but I know Congressman Schock is doing what he thinks is best for his constituents and I support his decision.” said Davis. “I have enjoyed serving with Aaron in Congress and will miss working with him on legislative issues important to Illinois.”

*** UPDATE 9 *** Congressman Adam Kinzinger…

“During my time in Congress, I have come to know and respect Aaron Schock’s dedication to serving his constituents, his tireless advocacy for our country’s future and the people in the 18th District. Aaron was constantly looking for ways to end partisan gridlock, never afraid to reach across the aisle to find real solutions for American families. I was saddened to learn of his resignation and wish him the best.”

Nothing yet from Mark Kirk.