States that voted for President Trump in the 2016 presidential election will be most impacted by his decision to cut off key ObamaCare payments, according to an analysis conducted by The Associated Press.

The study found that 70 percent of those who benefit from the subsidies are from states where Trump won.

In the 30 states that Trump carried, about 4 million people benefit from the cost-sharing payments, the AP reported.

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Nine out of the ten states with the highest percentage of people benefiting from the payments voted for Trump, according to the AP.

The White House announced last week that Trump would end key payments to insurers selling ObamaCare plans.

The decision marked Trump's most aggressive move yet to dismantle the law after multiple GOP efforts to repeal and replace it failed this year.

The Trump administration has continued making the disbursements to insurers, known as cost-sharing reduction payments, on a monthly basis. But Trump had consistently threatened to end the payments, which are worth an estimated $7 billion this year.

In response, 18 states and Washington, D.C., signed onto a lawsuit filed last week in federal court in California.

The complaint will seek a temporary restraining order, preliminary injunction and permanent injunction requiring the cost-sharing reduction payments be made.

Democrats also quickly criticized the decision and warned of the impact it would have on the health-care system.