GOP congressional candidate in the 4th district Ron Estes votes at Holy Cross Lutheran Church, Tuesday, April 11, 2017, in Wichita, Kan.
Other Democrats also heralded the Kansas results.
Estes supported Trump a year ago and backs the president's policies. "That's the big thing right now". A group that formed following Sanders candidacy, Our Revolution, supported Thompson during the campaign through social media and recruited volunteers to make phone calls on his behalf.
Chris Pumpelly, a spokesman for his campaign, said Thompson would run for the seat again in 2018.
It and another close congressional race in Republican territory in the state of Georgia next week, could portend tough election battles for the president's party in 2018. Trump won that county by 18 points. The race was important because both sides put all their resources into it - Mike Pence, Ted Cruz and even Trump recorded get-out-the-vote messages.
"Certainly Estes is not helped by [Republican Governor Sam] Brownback", Loomis said, referring to the Kansas governor who recently vetoed Medicaid expansion that would have given health care to 150,000 people in the state.
But Thomas Hauser, 67, of Belle Plaine, a Republican who works in the information technology industry, said he crossed party lines in Tuesday's election to vote for Thompson.
Estes said he and his wife, Susan, will maintain roughly the same living arrangements they've had since he was elected state treasurer in 2010. Thompson has called the Kansas congressional election more of a referendum on Brownback than on Trump. "Seeing everybody here, and I know where we need to go to fix what w weren't able to do in 60 days".
A loss - in one of the 100 most Republican-leaning districts in the country, according to the Cook Political Report's Partisan Voting Index scores, which measure presidential-election performance against the national average - would have been devastating for the GOP and particularly for Trump, who already in his young presidency has had trouble wrangling lawmakers to vote for administration priorities like the repeal of Obamacare. His campaign, inspired by Sen. Thompson came up short in his bid to beat republican Ron Estes in a special election to replace current Central Intelligence Agency director, and former U.S. Rep Mike Pompeo in the Kansas 4th congressional district. But on the morning after the election, it appears the president was savoring the unimpressive victory. Candidates in special elections also don't have the advantages held by incumbents.
The southern Kansas district, dominated by Wichita and its suburbs, has been represented by Republicans since the 1994 wave election that gave the party control of the House of Representatives for the first time since the 1950s.
Trump says "Ron Estes is running TODAY for Congress in the Great State of Kansas".
Trump on Wednesday submitted a Tweet celebrating Estes' victory.
Republican Ron Estes won a Kansas House seat in Tuesday's special election, the first congressional election since President Donald Trump's victory. It was the first special congressional election since Trump's election as president past year.
Still, Thompson is far too liberal to win in a place like the 4th Congressional District in a normal year.