Mr. Walker’s own speeches are vivid and clear. “We have four deficits: a budget deficit, a savings deficit, a value-of-the-dollar deficit and a leadership deficit,” he tells one group. “We are treating the symptoms of those deficits, but not the disease.”

Mr. Walker identifies the disease as having a basic cause: “Washington is totally out of touch and out of control,” he sighs. “There is political courage there, but there is far more political careerism and people dodging real solutions.” He identifies entrenched incumbency as a real obstacle to change. “Members of Congress ensure they have gerrymandered seats where they pick the voters rather than the voters picking them and then they pass out money to special interests who then make sure they have so much money that no one can easily challenge them,” he laments. He believes gerrymandering should be curbed and term limits imposed if for no other reason than to inject some new blood into the system. On campaign finance, he supports a narrow constitutional amendment that would bar congressional candidates from accepting contributions from people who can’t vote for them: “If people can’t vote in a district not their own, should we allow them to spend unlimited money on behalf of someone across the country?”