Here’s the key section of today’s editorial in the WaPo:

THROUGH ALL THE flip-flops, there has been one consistency in the campaign of Republican presidential nominee Mitt Romney: a contempt for the electorate.
How else to explain his refusal to disclose essential information? Defying recent bipartisan tradition, he failed to release the names of his bundlers — the high rollers who collected hundreds of thousands of dollars in donations. He never provided sufficient tax returns to show voters how he became rich.
How, other than an assumption that voters are too dim to remember what Mr. Romney has said across the years and months, to account for his breathtaking ideological shifts? He was a friend of immigrants, then a scourge of immigrants, then again a friend. He was a Kissingerian foreign policy realist, then a McCain-like hawk, then a purveyor of peace. He pioneered Obamacare, he detested Obamacare, then he found elements in it to cherish. Assault weapons were bad, then good. Abortion was okay, then bad. Climate change was an urgent problem; then, not so much. Hurricane cleanup was a job for the states, until it was once again a job for the feds.
The same presumption of gullibility has infused his misleading commercials (see: Jeep jobs to China) and his refusal to lay out an agenda. Mr. Romney promised to replace the Affordable Care Act but never said with what. He promised an alternative to President Obama’s lifeline to young undocumented immigrants but never deigned to describe it.
And then there has been his chronic, baldly dishonest defense of mathematically impossible budget proposals. He promised to cut income tax rates without exploding the deficit or tilting the tax code toward the rich — but he refused to say how he could bring that off. When challenged, he cited “studies” that he maintained proved him right. But the studies were a mix of rhetoric, unrealistic growth projections and more serious economics that actually proved him wrong…
…[Romney] seems to be betting that voters have no memories, poor arithmetic skills and a general inability to look behind the curtain. We hope the results Tuesday prove him wrong.