“Steve loves and passionately looks forward to that Congressional Baseball Game,” said Jason Hebert, a Republican political consultant who has worked with Mr. Scalise for years. “When he ran for whip after his election, he gave everyone on his team a Marucci baseball bat, which is made in Louisiana. He has a real love for baseball. This was a real big source of pride and enjoyment for him.”
Mr. Scalise, 51, has been a fixture in Louisiana Republican politics. He served in the Louisiana State Legislature, where he played baseball in State House and Senate matchups, and was known for pressing hard on legislation that included many conservative bills and a measure to better position the state as a film destination. The State Capitol was where he mastered the art of the personal relationship.
State Senator Norbèrt Chabert recalled being in Baton Rouge a few weeks ago during a grueling legislative session when he got a text from Mr. Scalise, who had just dined at a restaurant owned by Mr. Chabert’s niece and sent him a photo of her. “He said he ‘had a great meal at Dominique’s and wish you were here,’ ” Mr. Chabert recalled. “That’s the kind of guy Steve is.”
Mr. Scalise won a special election in 2008 to fill the House seat of Bobby Jindal, who had been elected governor. In Congress, Mr. Scalise quickly and quietly amassed power among a diverse group of House Republicans, in spite of the most conservative wing’s persistent chafing at what it saw as his establishment-wing persona.
At the end of 2012, he was elected chairman of the Republican Study Committee, a large group of conservative House Republicans who are generally viewed as more favorable to House leaders than the far smaller House Freedom Caucus. Mr. Scalise used the position as a springboard to become whip, the No. 3 position in the House.
Mr. Scalise seemed poised to rise in House leadership after Speaker John A. Boehner announced in 2015 that he would retire, but a bid by Representative Kevin McCarthy of California, the majority leader, to replace Mr. Boehner was scuttled and Mr. Scalise stayed put. He was somewhat hobbled by revelations that year that he had addressed a group of white supremacists affiliated with David Duke in Metairie, La., about a dozen years earlier.
Mr. Scalise, who represents one of the most dependably Republican districts in Louisiana, was a reliable critic of President Barack Obama and largely a strong supporter of President Trump, who once recorded a birthday message for one of the congressman’s children.
In the 2016 election, Mr. Scalise cruised to victory with 75 percent of the vote in a field of seven candidates. He has been an aggressive voice for the gas and oil industry, typical of a politician of either party from his state, and for sportsmen and small-business owners. His crusade against the Obama-era Dodd-Frank bank regulations endeared him to many in the district like Kellen Picou, whose family owns Mr. Ronnie’s Famous Hot Donuts in Houma. “This is one of the reasons I was following him,” Mr. Picou said.
Mr. Scalise, who can be seen after House votes cheerfully plowing through the Capitol like a bobcat on the hunt for his next meal, is popular among his colleagues, who say he refrains from the sort of hardball tactics that whips sometimes use to wring out votes. “He generally tries to use a soft-glove approach,” said Representative Charlie Dent, Republican of Pennsylvania, who resisted voting for a health care bill that the White House deeply wanted to pass. “He is relentless even if you’ve told him no. I was a no on health care, but that didn’t stop him from coming up again and asking.”
Mr. Scalise, who is married with two children, is big on telling stories and jokes, and he has been known to don a waiter’s jacket and show up at the tables of friends and associates if he learns they are dining in the same restaurant.
With much turnover in the Louisiana congressional delegation in recent years, and with a Democratic governor at the helm, Mr. Scalise is widely viewed as his party’s biggest elected star in the state, and a rainmaker for other lawmakers.
“Steve just has the golden touch,” said Brian Trascher, a lobbyist in New Orleans with long-lasting political ties to Mr. Scalise. He campaigned for Mr. Scalise as a student at Louisiana State University, Mr. Scalise’s alma mater, when he first ran for the statehouse in 1995. “I think just because he may be the longest-serving Republican elected official in the state, he is definitely the most powerful Republican in the state right now.”
Mr. Trascher added, “When he became whip we would joke, ‘Oh Steven, you’re a big shot now; you’ve got bodyguards.’ Well and thank Jesus Christ he had those now.”