New opinion polls out today show a tightening US Democratic race between Hillary Clinton and Barack Obama, just two days before the 'Super Tuesday' national nominating showdown.
Meanwhile surveys on the Republican side show John McCain poised to take a stranglehold on his race ahead of Mitt Romney.
The close Democratic race reflected in the polls and suggests no clear winner will emerge in the race on Tuesday.
A new national poll for the Washington Post and ABC had Mrs Clinton with a slim four point lead over Mr Obama 47% to 43%.
Mrs Clinton has small leads in most other significant states, but Mr Obama, appears to be closing fast.
In the delegate-rich state of California, Mr Obama and Mrs Clinton appear to be locked in a tight battle.
In another battleground, Missouri, where Mrs Clinton was campaigning on Sunday, she led Obama 47% to 41% according to a McClatchy/MSNBC poll.
In Georgia, where Mr Obama is trying to thrust home his advantage among African-Americans, he leads by 47% to 41%, the MSNBC poll found.
In New Jersey, in New York Senator Clinton's backyard, she led 46% to 39% in an MSNBC survey.
In contrast to the Democratic race, Mr McCain looks set for a clear victory on Tuesday.
Mr McCain led 48% to 24% percent over Mr Romney in a Washington Post/ABC News national poll.
Mr McCain led state polls in New York, New Jersey, Missouri and Illinois by comfortable margins.
In California, where Mr McCain snapped up the endorsement of Governor Arnold Schwarzenegger last week, he held a comfortable lead in polls.
