So, the effect of the calendar is also in play.
In 2000, it looks like about 40% of the pledged delegates were awarded by March 7th Super Tuesday, including California, New York and Ohio.
In 2004, ~60% of the delegates were awarded, again with CA, NY and OH by March 2nd.
Bradley and Dean, even with more funding, should have still seen the writing clearly on the wall.
In 2008, Clinton and Obama basically fought to a tie after Super Tuesday. Despite that 60% of delegates were awarded there was still a contest ahead.
This primary by "Super" Tuesday only a quarter of delegates were awarded. Still haven't reached 60% of delegates. New York is still weeks away. California isn't for months.
Thus, allowing the illusion that the race isn't over.
Thanks, Debbie.