In it, but not of it. TPM DC

Dems' 2014 Problem: GOPers Hate Obamacare More than Dems Love It

AP Photo / J. Scott Applewhite

Thursday's poll is just one data point, but it tracks with others that have been released recently. A Bloomberg poll released last month found that 73 percent of Americans who support repealing Obamacare said that they would definitely vote and that health care would be a major factor. Those numbers fell off among those who support keeping the law in place.

It's a problem that Democrats are well aware of.

"People strongly believe that it's being used for base intensity and for driving base turnout," Stan Greenberg, a top Democratic pollster, told TPM last month. "People are very alert to that."

The fundamentals are already working in the GOP's favor -- Democratic constituents are historically less likely to vote in midterm elections and the party is defending deep-red seats that it won during President Barack Obama's historic 2008 campaign.

Democrats believe that they have some ways to counter that built-in GOP advantage. They're investing heavily in an Obama campaign-style turnout effort and focusing on economic issues -- a minimum wage increase and equal pay for women, to name two -- that are popular, both with their base and more broadly.

But Thursday's Pew poll is a reminder of the challenge they face.

The poll, conducted from April 3 to 6, surveyed 1,010 U.S. adults. Its margin of error was 3.6 percentage points.