WASHINGTON — Frustration is mounting among Republican activists over the GOP’s continued failure to repeal and replace ObamaCare, with grass-roots groups now warning of consequences for lawmakers in the 2018 elections if the Senate doesn’t reach a deal soon.

“Activists, real grass-roots people, are absolutely disappointed, and to some point I’d say devastated, over what we feel like is a broken promise,” said Donald Bryson, the state director of the North Carolina chapter of Americans for Prosperity, an influential conservative group backed by the Koch brothers.

“A lot of these people are just really like, ‘Why wasn’t there a plan? Why don’t you all have a sense of urgency?’” he said.

In a surprise move last week, Senate Majority Leader Mitch McConnell delayed a vote on the measure until after the July 4 recess in an effort to lock down more support for the bill. Lawmakers are now scrambling, again, to hammer out an agreement to repeal and replace the Affordable Care Act that won’t cause either the moderates or the conservatives to jump ship.

McConnell can only afford two “no” votes, and going into the recess this week, there remained considerable opposition to the bill drafted in secret.

Conservative activists around the country are not in agreement over the details of the legislation. But they are vociferously making the case that Republican lawmakers need to figure out a way to repeal ObamaCare — fast.

“If the Republican Party cannot show they can deliver on a basic campaign promise like ObamaCare, I’m very concerned about the ability to keep the House and Senate next year,” said Noah Wall, the national director of campaigns at the conservative group FreedomWorks.

Part of the challenge for lawmakers grappling with the bill is the division within the party over how far it should go in repealing ObamaCare and what a replacement would look like — not to mention the multiple viewpoints on the issue expressed by President Donald Trump.

Last week alone, Trump both suggested that it would ultimately be “okay” if the bill wasn’t successful, and just days later, took to Twitter to urge, “if Republican Senators are unable to pass what they are working on now, they should immediately REPEAL, and then REPLACE at a later date!”

“I mean, what is it?” exploded JoAnn Fleming, a major Texas tea party leader, recounting the president’s varying remarks. “That fuels uncertainty, it just does. I would like to see the president and the current administration be successful, but when they keep giving these mixed signals, I really don’t know how we can go about having an orderly process to get this done.”