permission to use your photo

[jameser_mi]

Need some assistance on this

It was recently brought to my attention that a mayoral campaign website, is interested in a photo I took of Downtown Nashville Skyline. Photo of interest

[url]http://www.pbase.com/jameser_mi/image/72764319/medium.jpg
[/url]

While I don't have all the info yet. All they asked was "willing to grant permission, under what conditions."

Besides the obvious, myself keeping the copyrights. What esle should I consider?

Thank you in advance for an assistance you can offer