(CNN) - After nearly a year of campaigning and the winnowing of a large presidential field, it's all come down to Super Duper Tuesday.
A new CNN/Opinion Research Corporation national poll shows Sens. Clinton and Obama in a virtual tie going into Tuesday's voting. On the Republican side, Sen. John McCain has a comfortable lead over former Massachusetts governor Mitt Romney and former Arkansas govern Mike Huckabee. Senior Political Analyst Bill Schneider reports.
Notwithstanding McCain's lead in the polls, Romney continues to fight for the GOP's nomination. Mary Snow was on the trail with Romney and reports on his efforts to challenge McCain's conservative credentials.
Sen. McCain spent part of Monday in Romney's backyard - Boston, Massachusetts. Chief National Correspondent John King reports on McCain's last full day of campaigning and on the state of the GOP race before Tuesday's voting.
The Democratic race is quickly turning into a delegate head-count. Senior Political Correspondent Candy Crowley reports on the Clinton campaign's effort to maintain a lead over Sen. Obama who is surging in most recent polls.
Plus, Sen. McCain was not the only candidate in a rival's backyard. Obama spent Monday in Sen. Clinton's backyard, the New York City metropolitan area. Suzanne Malveaux reports on the help Obama received from prominent politicians and celebrities in his final push before Tuesday.
Click here to subscribe to CNN=Politics Daily.
–CNN Associate Producer Martina Stewart