As voters have gotten to know Senator Barack Obama, they have warmed up to him, with more than half, 53 percent, now saying they have a favorable impression of him and 33 percent saying they have an unfavorable view. But as voters have gotten to know Senator John McCain, they have not warmed, with only 36 percent of voters saying they view him favorably while 45 percent view him unfavorably.

Even voters who are planning to vote for Mr. McCain say their enthusiasm has waned. In New York Times and CBS News polls conducted with the same respondents before the first presidential debate and again after the last debate, Mr. McCain made no progress in appealing to voters on a personal level, and he and his running mate, Gov. Sarah Palin, had alienated some voters.

Personal appeal is an intangible element in voters’ decisions. Each voter has a personal reason for connecting with a candidate or not. But the percentage of those who hold a favorable opinion of Mr. Obama is up 10 points since last month. Opinion of Senator Joseph R. Biden Jr., Mr. Obama’s running mate, is also up, to 50 percent last weekend from 36 percent in September.

In contrast, favorable opinion of Mr. McCain remained stable, and unfavorable opinion rose to 45 percent now from 35 percent in September. Mrs. Palin’s negatives are up, to 41 percent now from 29 percent in September.