A new study out Wednesday notes that all 50 states and the District of Columbia saw decreases — often sharp decreases — in their rates of people lacking health insurance after implementation of the Affordable Care Act.

A lot of people got health insurance under Obamacare — and they've elected a president who has vowed to take it away.

Nine states "experienced 10 to 13 percentage-point reductions in their adult uninsured rate from 2013 to 2015," the Commonwealth Fund report said.

Among those states, California, Kentucky, Oregon, Rhode Island, Washington state and West Virginia cut their uninsured rate by at least half.

The same Commonwealth Fund report also found that in 38 states and in Washington, D.C., the share of adults who reported not going to the doctor because of cost dropped by at least 2 percentage points since the ACA took full effect.

And in 16 states and D.C., there were declines in the percentage of people at risk for poor health outcomes who did not have a routine doctor's visit, the report said.

Kentucky was the state that benefited most in terms of both increases insurance coverage and decreases in cost barriers to health care, the Commonwealth Fund said.

In 2013, before the ACA took effect, Kentucky's uninsured rate was 17 percent — which also happened to be the average uninsured rate nationally.

Two years later, Kentucky's uninsured rate was just 7 percent — a 10 percentage-point drop. The state's uninsured rate by then was 4 full percentage points lower than than the new national average of 11 percent in 2015.

And for low-income adults in Kentucky, the results were even more dramatic: a 25 percentage-point drop in the uninsured rate.

Only 12 percent of Kentuckians reported forgoing health care because of costs by 2015. That compares with 19 percent who said so in 2013, according to the Commonwealth Fund.

Kentucky, however, overwhelmingly supported Obamacare opponent Donald Trump in the presidential election, giving the Republican nominee more than 62 percent of its vote, compared with just 32.7 percent for Democratic candidate Hillary Clinton.

In an article last week, Vox detailed how many people in Kentucky who directly benefited from health insurance coverage expansion under Obamacare voted for Trump — but at the same believed he would make Obamacare work better.

"We all need it," Trump voter Kathy Oller, who helps people enroll in Obamacare, told Vox. "You can't get rid of it."