As a politician, the answer I look for the most from other politicians is 'I don't know'. It's a sign of honesty. While there are some brilliant ones out there, most of us aren't geniuses, I certainly am not.
In addendum, out of half truth and half jest... For those of you who think that cursing is a sign of honesty, I have had to work hard on not cursing, and if I do, make sure it's either witty or well timed. That's the most difficult part of all this for me. 