Having abandoned for now their effort to force President Bush to withdraw troops from Iraq, Democrats are not giving ground against a lesser nemesis: Rush Limbaugh.

With the help of liberal advocacy groups, the Democrats in Congress are turning Mr. Limbaugh’s insinuation that members of the military who question the Iraq war are “phony soldiers” into the latest war of words over the war.

A resolution introduced by 20 Democrats urges the House to condemn the “unwarranted slur” made by Mr. Limbaugh, though it does not condemn the broadcaster himself.

Their push, not coincidentally, comes after House and Senate Republicans maneuvered some Democrats into voting to condemn an advertisement by MoveOn.org in The New York Times last month that referred to Gen. David H. Petraeus as “General Betray Us.”

“What’s good for the goose is good for the gander,” Representative Steny H. Hoyer, Democrat of Maryland and the House majority leader, said Tuesday.