Washington (CNN) Most Americans say they're keeping an eye on the televised impeachment hearings -- but that doesn't mean they're open to changing their minds about what they mean, according to new polling.

But just because they're tuning in doesn't mean you can expect them to change their minds on whether President Donald Trump should be impeached. Most respondents to both polls say they've made up their minds on impeaching Trump, regardless of what is actually said at the hearings.

Almost two-thirds say they can't imagine any information or circumstances that would change their minds about impeachment during the hearings, according to the NPR/PBS/Marist poll. Meanwhile, 30% say they could imagine changing their minds.

The ABC/Ipsos poll showed a portion of Americans who locked in their thoughts even before the hearings came into play: 32% say they made up their minds before news on Trump and Ukraine even emerged.

Read More