On the day before Gov. Scott Walker introduced his plan to restrict public-sector collective bargaining, he met with Democratic legislative leaders to brief them on the details. Assembly Minority Leader Peter Barca expressed disbelief, complaining to Walker that he hadn’t mentioned the plan at all during the gubernatorial campaign.

This meme has become the primary obloquy hurled at Walker during the collective-bargaining firestorm: Walker is somehow a liar for not mentioning his plan while campaigning for governor in fall 2010. Walker’s proposal “went far beyond what anybody thought he would do,” union leader Richard Abelson told the Milwaukee Journal Sentinel in February. “He didn’t talk about it during the campaign. If he had said that, some people who supported him would have had some second thoughts,” said Abelson, head of District Council 48 of the American Federation of State, County and Municipal Employees.

Yet the “we was duped” talking point is as old as democracy itself. Ancient Greeks were probably overheard saying things like, “None of Cleisthenes’ YouTube videos mentioned that he was going to stop me from trading my wife for three goats.”

In 1960, Republican presidential candidate Nelson Rockefeller ripped his primary opponent, Richard Nixon, for not being forthcoming with voters about his plans. “I find it unreasonable — in these times — that the leading Republican candidate for the presidential nomination has firmly insisted upon making known his program and his policies, not before, but only after nomination by his party,” Rockefeller said.

He lost.

The Walker complainers have a more finely honed selective memory than people who remember the Titanic as a fine dining experience. Do they recall Walker’s predecessor, Democrat Jim Doyle, campaigning on cutting the University of Wisconsin budget by $250 million and raising tuition 35% in two years to cover it? Was candidate Doyle in 2002 running around the state promising to raid the transportation fund and backfill it with debt? Of course not — but upon taking office, he thought he had to do these things to balance the budget.

In fact, the archetype of the lying politician is as ingrained in American politics as the sight of candidates kissing babies. Doyle promised never to raise taxes — yet he raised them by billions during his tenure. Candidate Barack Obama pledged to close the Guantanamo Bay prison facility — yet under President Obama, there it remains, providing the government with the intelligence it needed to catch Osama bin Laden.

And yet Walker isn’t being excoriated for going back on a promise; he’s being criticized simply for something he didn’t say. (Incidentally, plenty of unions were telling their members during the campaign that Walker was going to roll back their ability to bargain.) As if campaigns are measured, cautious affairs, where candidates put forth their plans and voters carefully measure each morsel of fiscal policy contained therein.

In reality, the Walker campaign was fighting off claims that he wanted to kill women by denying them mammograms.

Finally, would Walker really have not been elected had he proposed to limit union bargaining during the campaign? Face it, he would have won.

In a year where Republicans wiped Democrats off the face of the political map, winning control of the state Senate, the Assembly and the U.S. House of Representatives and defeating liberal icon Senator Russ Feingold, do people actually believe Walker would have lost? Does someone want to call Supreme Court Justice David Prosser and ask him what he thinks?”