I know from experince that winning an endorsement makes that issue come up in at least 4 % important to the electorate. The game book says that speeches and ads change how important it is to the people, but how many ads does it take. I've had elections where I've advertised heavily on jobs, outsourcing and deficit reduction only to have that be a non-issue to the electorate. Are speeches more effective to make an issue important. I wish speeches weren't so expensive, I almost never use them.