As the presidential election enters its final week, most national polls show Governor George Bush heading for victory, while Vice-President Al Gore says he is still "confident of the outcome".
Both President Clinton and Mr Gore took to pulpits in African-American churches to seek votes, the former in Washington and the latter in Michigan, which is a battleground state.
Mr Bush took a rest at his Texas ranch before resuming the campaign trail. But he broadcast an appeal to Latino voters in California which he will visit this week.
Observers point out that the latest poll results are all within the margins of error, so that the apparent Bush lead could have disappeared by election day on November 7th.
Also the state-by-state polls, which some regard as more important, show that Mr Bush is struggling to win large states like Florida and Pennsylvania, which he will need to counteract Mr Gore's expected wins in California and New York. Those two states between them total 87 of the 270 electoral college votes that are required to win the White House.
Mr Clinton is expected to play a limited role electioneering this week as he visits a number of states carefully selected by the Gore campaign to urge Democratic voters to go the polls. Many Democratic activists have been urging the Gore campaign to make better use of Mr Clinton's campaigning skills as Mr Bush edges ahead, in the closest presidential election since the Kennedy-Nixon one of 1960.
Mr Clinton himself is eager to get more involved than just raising money but said at the weekend: "I will do whatever I think is best in consultation with the campaign." He was responding to questions about reports that Mr Gore does not want him to campaign in the battleground states.
Mr Clinton told reporters at the White House: "The most important actors in this drama are Al Gore and Governor Bush. They're the only actors in the drama who really have any sway."
He added: "The rest of us might be able to sway some undecided voters if our arguments are heard".
An interview President Clinton has given to Esquire magazine due to be published in December following the election is causing some concern in the Gore campaign, after it was leaked along with the cover photograph showing the President perched on a stool with legs apart, smiling broadly.
Gore supporters fear the leaked interview, in which Mr Clinton rails against the Republicans for not apologising to the country for impeaching him, will revive negative feelings about the Monica Lewinsky affair and Mr Gore's praise of Mr Clinton as "one of our greatest presidents".
Mr Gore has received a not-unexpected endorsement from the New York Times, the country's most influential newspaper. The half-page editorial endorses Mr Gore "as the man best equipped for the Presidency by virtue of his knowledge of government, his experience at the top levels of federal and diplomatic decision-making and his devotion to the general welfare".
The editorial says the nation's prosperity, environmental progress and its guarantees of civil rights and reproductive freedom "could be undone in a flash by a pliable and inexperienced president driven by a highly ideological Congress".
Mr Bush continues to exude confidence as he heads into the last week while warning that the election is not yet won. He has sharpened his attacks on Mr Gore, saying he is making promises about protecting social security he cannot keep without running the country into debt.
"I could barely contain myself" when Vice-President Gore said he was opposed to big government, Mr Bush told supporters in Wisconsin on Saturday. "I knew the man was prone to exaggeration, but that one took the cake."