Edited sentence: , Michael Arcuri (NY-24)), the Northeast (Paul Hodes (NH-2)), Upper Midwest (Steve Kagen (WI-8)), the West (Jerry McNerney (CA-11)), and women candidates in general.A John McCain candidacy could aid Republican chances in Arizona and other western states such as in the open seats of Rick Renzi (AZ-1) and John Shadegg (AZ-3), but harm Republican efforts in vocal anti-war districts.Barack Obama could aid Democrats in districts with significant African-American populations such as Sanford Bishop (GA-2) and Al Green (TX-9) while possibly harming Democrats in districts with a history of segregation politics such as Charlie Melancon (LA-3).Hillary Clinton could be potentially damaging for Democrats in rural districts in the South and West such as Heath Shuler (NC-11) and Jim Matheson (UT-2), but she might help Democrats in New York State (e.McCain's moderate policies on some issues might help moderate Republican candidates, but could harm conservative candidates.Mike Huckabee, as a vocal social conservative Republican nominee, might harm GOP prospects in the Blue States but could help in the Red States