Network news coverage has favored Democratic candidates in the midterm election, and the page scandal involving former congressman Mark Foley has been the main story line, drawing almost as much coverage as Iraq and terrorism combined, a new study finds.

An analysis by the Center for Media and Public Affairs of midterm election stories aired on the ABC, CBS and NBC evening newscasts Sept. 5-Oct. 22 found that 2006's coverage has been almost five times as heavy as in the 2002 midterm elections: 167 stories, compared with 35 four years ago.

The study found that three out of four evaluations of Democratic candidates' chances of winning — such as sound bites — were positive, compared with one out of eight for Republicans...