Washington Post columnist Ruth Marcus, a longtime supporter of Barack Obama, isn't thrilled with Obama's demeanor since the Nov. 6 election:

The biggest mistake President Obama could make now is to arrogantly overinterpret the election results.

One of the dumbest things politicians do in the aftermath of elections is to claim a mandate.

Even dumber is when they actually believe it. And re-elected presidents are especially susceptible to the mandate delusion.

Mr. Obama ... don’t fall victim to the mandate delusion