Mr. Volcker has championed efforts to bar banks from trading with their own money, a practice known as proprietary trading that is outlawed under the new policy.
Under him, it has championed efforts to clamp down on exorbitant executive pay, auditors' conflicts of interest and much else in companies in which it has stakes.
Dr. Berwick has championed efforts to "reduce the total supply of high-technology medical and surgical care" and to consolidate services in regional centers.
"I've worked hard to champion efforts to control the overdevelopment in this district," said Mr. McMahon, who is also running on the Conservative Party line.
Senator Charles E. Grassley, Republican of Iowa, who has championed efforts to change the way the agency polices drug risks, said Avandia was proof that changes are needed.
Since 2009, Florence's youthful mayor, Matteo Renzi, has championed efforts to build a livable, living city that celebrates — but is not yoked to — its rich history (and historic riches).
In recent years, I.B.M. has championed efforts to make data centers more efficient and to centralize more computing tasks in the data centers, with desktops and devices tapping in.
Mr. Thompson, the former senator from Tennessee, has at times voted in support of affirmative action, at other times against it; Reagan's Justice Department consistently championed efforts to eliminate it.
Mr. Frank, who in 1987 became the first sitting member of Congress to volunteer that he was gay, also championed efforts to shield gay people from discrimination — efforts like the repeal of "don't ask, don't tell," the law that banned them from serving openly in the military.
