The ever-expanding media universe offers a wealth of different
sources of information about the presidential campaign: wire
services, the networks, local news, cable, radio, newspapers,
newsmagazines, opinion magazines, and the Internet, among
others. For any given medium, information about the campaign can
be packaged in a variety of ways. For example, on a network
there are the flagship evening newscasts, morning shows,
magazine programs, Sunday morning newsmaker programs, occasional
specials, and so forth. Similarly, in a newspaper one finds hard
news articles, news analysis, long features, lighter,
"Style"-type pieces, photographs, columns, editorials, and
editorial cartoons.  Just as campaigns vie for support from
voters, news organizations seek to gain loyalty of viewers,
readers and surfers. Promos in their own pages or broadcasts, or
ads placed in other media highlight programming and
personalities and establish brand identity.   A campaign unfolds
along a fixed chronological path, with clear markers