Appealing and interesting. Well designed and easy to navigate. Very complete feature set. More interactive features. Site you want to go to for ideas.
Content is updated regularly.
Additional features might include involvement of constituent groups, video and audio, scheduled interactive web activities such as an on-line chat with the president, additional forms, donor recognition, stories on prominent constituents. Hard to get into this category, and once in, you have to stay ahead to keep in. It takes a lot to get into this category. These sites would appear in the Top 100 lists for the whole web. Features would include individual customization, frequent and often daily content changes, use of video.