Published online by Cambridge University Press: 14 July 2006
By far the most significant form of gerrymandering is partisan gerrymandering. It is painfully ubiquitous and yet can be covert, hidden in plain view. More importantly the advent of the computer and the growing polarization of the electorate have enhanced its importance. Already the House of Representatives has become virtually safe for most incumbents and in recent elections experienced less turnover than the Senate, which has far fewer members and only one-third of its members up for reelection.