The Growing Political Clout Of Suburbs

"For the first time ever, most House districts have a suburban majority. The congressional reapportionment and districting that occurred in the first half of this decade, combined with the population shifts during the 1990s that were reflected in the census of five years ago, mean that there are now 220 districts (51 percent) in which most people are residents of a suburb.

What that means is that candidates’ appeal to suburban voters is among the most important keys to controlling Congress."