Public-opinion polls show that Americans split about evenly on civil unions. But when the words 'gay marriage' are presented, they break 3-to-1 against it.

Franklin Roosevelt didn't poll, because he had great political instincts. Now we have polls; we don't need instincts. But is that a change in principle? Is it a change in principle that we use a Xerox instead of carbon paper? It's of the same order of magnitude.

In modern politics, polls often serve as the canary in the mine - an early warning signal of danger or trends. But polls can also be used to wag the dog - diverting attention from something significant.

I think that five, 10, 50 years down the road, we'll be honoring President Barack Obama for ending two wars, stopping the economic hemorrhage and, yes, reducing the number of uninsured. And the polls won't matter.

Sure, it is apparent that presidents are looking at polls, but they are also stepping up on issues. President Clinton stepped up on tobacco. He shaped the polls on the tobacco issue.

I think President Bush tried to step up on Social Security even though the polls showed that was unpopular. He has not been successful and backed off, but I admire people who take on big problems.

As the news media eagerly report on polls showing that millennials increasingly reject capitalism, progressives energetically push the Democratic Party to the left.