Still, voter turnout for McKinney was roughly the same as it was in her last three primaries.

CNN: Crossover voters were key in Georgia races

After Iowa and New Hampshire, why not have only two or three primaries or caucuses a week?

FORBES: Fact and Comment

Among the 12 are the three largest states holding primaries Tuesday -- New York, California and Ohio -- as well as Texas and Florida, which hold primaries March 9.

CNN: Cuomos endorse Kerry

Primary and caucus voting in Louisiana, Washington and Nebraska had barely wrapped up before the Democratic candidates were off campaigning in the next big primary region: Maryland and the District of Columbia will go to the polls Tuesday, but the most competitive of the three states to hold primaries that day is Virginia.

NPR: Clinton, Obama Face Off in Virginia

At that point, just before March 7th, when a third of Republican delegates are up for grabs, Mr McCain could conceivably have won three of the first four primaries.

ECONOMIST: Not least his own party

Her 20-point win in the primaries was built on support from three groups: baby-boomers, women of all stripes and independents.

ECONOMIST: A woman in Michigan shows there is life left in Clintonism

More than two years before the primaries begin, he is already making speeches in three or four states a week.

ECONOMIST: The Steve Forbes drum-beat

The survey also shows more than three quarters of Latinos who said they voted for Clinton in the primaries, now indicate they are likely to vote for Obama in the general election.

CNN: Poll: 'Sharp reversal' for Obama with Latino voters

Colour is added by using three separate arrays, each fitted with a filter for one of the primaries red, green and blue that, in combination, produce a full-colour image.

ECONOMIST: Curtains for celluloid

But the primaries have been moved up this time, so everybody is running essentially about three months ahead of schedule.

NPR: Clinton May Hold Early Campaign Cash Lead