Call it Titanic Tuesday. Or Super Tuesday 2. Voters in Ohio, Texas, Vermont and Rhode Island are casting ballots in presidential primaries and caucuses.

In the Democratic race, most eyes will be on the delegate-rich states of Ohio and Texas. Sen. John McCain take clinch the Republican nomination on Tuesday.

AP (ENLARGE)

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Some pundits say Clinton must take both states to have a serious chance of slowing the Obama express.

Polls show Clinton with a lead in Ohio, with a spread of 2-12 points depending on the poll. In Texas, the race appears tighter and several polls put Obama ahead by as much as 6 points. (One poll puts Clinton ahead by 4 points.)

How the pair size up:

PRIMARIES/CAUCUSES WON:

Clinton: Ariz., Ark., Calif., Fla., Mass., Mich., Nev. N.H., N.J., N.M., N.Y., Okla., Tenn.

Obama: Ala., Alaska, Colo., Conn., Del., D.C., Ga., Hawaii, Idaho, Iowa, Ill., Kan., La., Maine, Md., Minn., Mo., Neb., N.D., S.C., Utah, Va., Wash., Wisc.

DELEGATES

Clinton: 1,276

Obama: 1,383

Source: Associated Press. Includes the so-called superdelegates, who can still change their allegiance.

MONEY RAISED

Clinton: More than $138 million as of the campaign's Feb. 20 report to the Federal Election Commission

Obama: Nearly $141 million as of the campaign's Feb. 20 report to the Federal Election Commission

MONEY SPENT

Clinton: Nearly $109 million as of Feb. 20

Obama: Nearly $116 million as of Feb. 20

KEY ENDORSEMENTS

Clinton:

— Oscar-winning actor Jack Nicholson

— Wilma Mankiller, the first woman principal chief of the Cherokee Nation

— John Glenn, former Ohio U.S. senator and astronaut

— Henry Cisneros, the first Hispanic to serve as the Secretary of the U.S. Department of Housing and Urban Development (HUD)

— William J. Perry, former Secretary of Defense

— Dr. Iyanla Vanzant, Best-selling author, ordained minister and spiritual life coach

— Georgia Attorney General Thurbert Baker, Agriculture Commissioner Tommy Irvin and Labor Commissioner Michael Thurmond

— Robert F. Kennedy Jr.

— Former Vice President Walter F. Mondale

— International Union of Bricklayers and Allied Craftworkers (BAC)

— United Farm Workers

— Retired Gen. Wesley K. Clark

Obama:

— Maria Shriver, California's first lady

— Senator Edward M. Kennedy

— Caroline Kennedy

— Former presidential candidate John Kerry

— Oprah Winfrey

— Atlanta Mayor Shirley Franklin

— Filmmaker Ken Burns

— Federico Pena, former energy secretary

— Civil rights leader and U.S. Rep. John Lewis, along with Georgia's other four Democratic Congress members

— Service Employees International Union

— Moveon.org

— Sen. Jay Rockefeller, chairman of the Senate Intelligence Committee

TV MOMENTS

Clinton

The candidate made another appearance on "Saturday Night Live" this past weekend. The episode portrayed NBC anchors Brian Williams and Tim Russert asking Clinton, played by Amy Poehler, tough questions while serving softballs to Obama.

Then the real Clinton appeared onscreen with an "editorial response."

The sketch, she said, "wasn't an endorsement of one candidate over another. I can say this confidently because when I asked if I could take it as an endorsement, I was told, 'Absolutely not.' But I still enjoyed that sketch a great deal because I simply adore Amy's impression of me."

When Poehler asked her how the campaign was going, Clinton responded: "The campaign is going very well. Very, very well. Why, what have you heard?"

Obama

Last fall, Obama made a surprise cameo on the show's opening sketch.

He appeared as a guest at a mock Halloween party thrown by Hillary Clinton and Bill Clinton.

A man showed up wearing an Obama mask turned out to be Obama himself. "I have nothing to hide," Obama said, "I enjoy being myself. I'm not going to change who I am just because it's Halloween."

He then opened the show with, "Live from New York, it's Saturday night!"

SPOUSES SPOUT OFF

Bill Clinton: "This thing is the biggest fairy tale I've ever seen," referring to what the former president said was a lack of media scrutiny of Obama and his campaign.

Michelle Obama: "For the first time in my adult life, I am really proud of my country. Not just because Barack is doing well, but I think people are hungry for change."