Attacking Paul Ryan’s Medicare plan — once seen as the most potent weapon in House Democrats’ campaign arsenal — is turning out to be a dud.

Democratic leaders have hit Medicare harder than any other issue for more than a year, even calling Ryan’s plan a “majority-maker.” But with Election Day just around the corner, Democrats are looking at pickups in the single digits — far short of the 25 seats they would need to retake the House.

Medicare simply hasn’t become the powerful tool that Democrats — and even many Republicans — expected.

“Aug. 11 — mark that date on your calendar — when Ryan was chosen, that made a very big difference. Because Medicare, Medicare, Medicare, the three most important issues in the campaign, in alphabetical order — that issue was clarified, the focus was on it,” House Democratic Leader Nancy Pelosi said a few weeks ago in an interview with MSNBC.