Harsh advertisements and negative attacks are a staple of presidential campaigns, but Senator John McCain has drawn an avalanche of criticism this week from Democrats, independent groups and even some Republicans for regularly stretching the truth in attacking Senator Barack Obama's record and positions.
Mr. Obama has also been accused of distortions, but this week Mr. McCain has found himself under particularly heavy fire for a pair of headline-grabbing attacks. First the McCain campaign twisted Mr. Obama's words to suggest that he had compared Gov. Sarah Palin, the Republican vice-presidential nominee, to a pig after Mr. Obama said, in questioning Mr. McCain's claim to be the change agent in the race, "You can put lipstick on a pig; it's still a pig." (Mr. McCain once used the same expression to describe Senator Hillary Rodham Clinton's health plan.)