Voters have a good choice, and they will be best served by a robust debate on the following issues: Energy.

American universities are the envy of the world partly because they encourage robust debate.

But a robust debate on political ethics is starting.

So far, though, it seems to me we are mostly within the bounds of robust debate.

I didn't think there was anything libellous or offensive beyond what would be expected in robust debate.

Remember that robust national debate we had before the 2010 election about the need to expand grammar schools across England?

We need a robust debate about our future defence requirements.

Not quite enough time for robust debate about broadcasters and the public trust.

As they note, the Constitution is now the center of a "robust" debate.

"But in general, from what I've been able to observe, it's been a robust debate."