James McLelland was born with a rare form of dwarfism and spent his first nine months in the hospital connected to tubes, machines and monitors.
About seven months before his birth in 2011, 聽kicked in, prohibiting insurers from imposing lifetime limits on health coverage.
鈥淚f Obamacare hadn鈥檛 been in effect, he would have hit the lifetime limit of $1 million before he ever left the hospital,鈥 said his mother, Jennifer McLelland, 35, of Clovis, Calif., using a common nickname for the ACA.
James, now 6, relies on a ventilator to keep him alive when he sleeps at night. The McLelland family has employer-sponsored insurance, but they fear that the health care bill the House of Representatives passed Thursday to replace Obamacare could have life-or-death consequences for James. They worry he could receive less coverage in the future, face a lifetime limit on coverage or even become uninsurable altogether.

James McLelland relies on a ventilator to keep him alive when he sleeps at night. (Courtesy of the McLelland family)
Their congressman, Republican Devin Nunes, supported the measure.
鈥淚 have friends and family who voted for Devin Nunes and President Trump,鈥 Jennifer McLelland said. 鈥淭hey say they pray for James. My son doesn鈥檛 need prayers. He needs health insurance.鈥
Nunes said in a written statement Thursday that the House vote was 鈥渁 big step 鈥 toward abolishing the failing Obamacare program and replacing it with a system that provides much better care at lower prices.鈥
The bill, he said, 鈥渨ill make health care available to every American who wants it while protecting those with preexisting conditions.鈥
Nunes and the 13 other Republican members of Congress from California voted for the House measure, called the 聽— even though some had suggested earlier that they would oppose it. The bill was unanimously opposed by Democrats nationally.
Many of those GOP representatives 鈥 as well as some others around the country 鈥 could pay a price at the polls, say political analysts and community health advocates. Those seen as most at risk represent districts where a large number of people have coverage because of the ACA, or districts that have trended blue recently.
Outside of California, some of those vulnerable Republicans include Reps. Carlos Curbelo (R-Fla.) and Erik Paulsen (R-Minn.), both representing districts where Democratic presidential nominee Hillary Clinton defeated聽Trump by a significant margin, according to .
Nearly two dozen Republican representatives hold districts that Clinton carried, which some political observers believe puts their seats at risk in 2018. Texas Rep. Pete Sessions, who was elected to his 11th term last fall.
In half of California鈥檚 Republican congressional districts, Clinton beat Trump in November.
California鈥檚 agricultural heartland, the Central Valley, has the most to lose from the House bill because its high poverty rate makes it highly dependent on Medi-Cal, the state鈥檚 version of the federal Medicaid program, which Obamacare expanded.
The House bill would phase out that expansion and would also significantly cut funding for the Medicaid program as a whole. In Tulare and Fresno counties, parts of which are in Nunes鈥 district, of residents are covered by Medi-Cal.
The GOP bill, which passed 217-213, would dramatically alter the tax credits that currently help people buy insurance from the state and federal insurance exchanges, allow states to waive critical Obamacare regulations and end the tax penalty for people who don鈥檛 have insurance.
Some ACA supporters believe the yes votes of the Central Valley Republicans directly contradict their constituents鈥 needs.
鈥淭he community is not going to forget this,鈥 said Sarah Hutchinson, senior policy coordinator for , a Tulare County organization that fosters youth leadership and advocates for health care access.
The young people who participate in her program live in congressional districts represented by Nunes and Rep. David Valadao, also a Republican. Hutchinson said young people from her group visited Valadao鈥檚 office several times over the past couple of months, asking him to vote against the repeal bill.
鈥淗e continually told us, 鈥業鈥檓 not sure how I鈥檓 voting. I鈥檓 leaning no,鈥欌 she said.
On Thursday, Valadao voted yes.
鈥淗e refused to acknowledge who his constituents are,鈥 Hutchinson said. 鈥淢ore than 50 percent of them use Medi-Cal, and so he鈥檚 literally turning a blind eye to these people and their family members.鈥
Valadao鈥檚 district, made up of Kings County and parts of Fresno, Kern and Tulare counties, not only has many residents with ACA coverage but also voted for Clinton by 15.5 percentage points over Trump in November.
Valadao鈥檚 vote could come back to haunt him, Hutchinson predicted.
Before now, she said, he was flying beneath the radar because of the political heat on Nunes, who has been criticized for his role as and its investigation into alleged Russian meddling in last year鈥檚 presidential election.
Now, 鈥減eople are going to start turning their energy toward Valadao because of the health care vote,鈥 Hutchinson said. 鈥淣ow they鈥檙e paying attention to him.鈥
The Obamacare repeal votes by Valadao and by , a Republican whose Central Valley district picked Clinton by 3 percentage points in November, may not have been savvy political moves, said John Capitman, executive director at the at California State University-Fresno.
鈥淭hey have become tremendously vulnerable,鈥 Capitman said.
, the Democratic Congressional Campaign Committee designated Valadao and Denham, along with five other Republican congressmen from California, as targets that they hope to unseat in the 2018 midterm elections. All seven represent districts that voted for Clinton last year.
Capitman said he anticipates that once constituents begin to see the impact of Thursday鈥檚 vote, they will boot Valadao and Denham out of office. But because the aftermath of the GOP bill might not be felt right away, the two congressmen may hold on to their seats next year, he said.
鈥淏ut by 2020 people will really start to feel the impact and they will be angry,鈥 Capitman said. 鈥淭hese representatives promised to make health care better. If this doesn鈥檛 happen, people are going to be disappointed. They are going to want answers.鈥
Denham defended his vote Thursday, saying the bill is 鈥渁 good first step toward putting control over personal health care choices back into the hands of individuals — not the federal government.鈥
Melissa Santos, the regional coordinator with in Modesto, a voter engagement advocacy group, said many people in Denham鈥檚 district feel betrayed.
Last month, Denham hosted a town hall meeting that drew about 1,000 people, . 鈥淗e promised us a 鈥榥o鈥 vote鈥 on the Obamacare repeal bill, Santos recalled.
Denham encountered fierce opposition, which shows that his seat is not safe, she said. 鈥淎 lot of people want him out of office. I鈥檝e met so many people that voted for him, but that support is no longer there.鈥
Stephanie Burtch and her husband, who live in Denham鈥檚 district, qualified for Medi-Cal under the ACA expansion, but after Thursday she is worried about losing it. Their enrollment in Medi-Cal marked the first time the Modesto couple had health insurance in about 15 years, with the exception of a short period when she was pregnant, she said.

Stephanie Burtch, 35, and husband David Burtch, 39, qualified for Medi-Cal under the expansion. It was the first time they had health insurance in about 15 years. (Philip Johnson/Courtesy of the Burtch family)
Burtch, 35, has , a chronic inflammatory bowel disorder, but she went without medication and treatment while she was uninsured.
Now that she鈥檚 covered and receiving care again, she has regained strength and made plans to return to school in the fall to become a teacher.
But those plans may be foiled if she, her husband or their kids lose their coverage, she said.
鈥淭he cost of tuition doesn鈥檛 seem feasible if we鈥檙e going to be paying for our own insurance,鈥 she said. 鈥淭his is heartbreaking for me. I was always a good student. I just couldn鈥檛 manage to stay in school when I was younger and didn鈥檛 have medication.鈥
Burtch said she wishes she could talk with Denham about the effect that Medi-Cal coverage has had on her family.
鈥淚 wish I could sit down with him and say, 鈥楪osh, if we could just stay on Medi-Cal for a couple more years, I can afford to finish my education. My income will increase and then I can help pay into the system.鈥欌
Update: This story was updated at 6:45pm ET聽to reflect national data.聽
This story was produced by , which publishes , a service of the . KHN Senior Correspondent Phil Galewitz contributed to this story.