Today there are five states up for grabs, North Carolina, Ohio, Florida, Illinois, and Missouri.
As of this post polls are closed in both Ohio and North Carolina.
Ohio is a winner take all state with 143 delegates up for grabs for the Democrats, and North Carolina splitting its 107 delegates between Sanders and Clinton.
In half an hour the polls close in Florida, Illinois, and Missouri.
Florida is also a winner take all state, and the biggest prize of the night, with 214 delegates available for the winning Democrat, and 156 from Illinois and 71 from Missouri to be split between the two.
If Hillary takes both Florida and Ohio, like she did in 2008, she will gobble up 357 delegates, and, assuming she wins or does well in the remaining states, stands to increase her lead over Bernie by quite a significant margin.
On the Republican side polls show Kasich either slightly ahead or tied with Donald Trump for that state's 66 delegates, but Trump is far ahead in every other contest.
If both Kasich and Rubio fail to win in their states it is a good bet that one, if not both, will drop out, leaving Ted Cruz to continue battling the Donald for the nomination.
So the GOP nominee is going to be wither Trump or Cruz huh?
Good job Republican party, good job.
I will keep updating this post as the results come in.
Stay tuned.
Update: Trump and Hillary are projected to win Florida tonight according to MSNBC. That is a huge win for Clinton, and essentially the end of the trial for Rubio.
Update 2: Hillary is also now projected to win North Carolina. That's two for two so far.
Update 3: As predicted Marco Rubio just suspended his campaign.
Update 4: Hillary has now won Ohio, another winner take all state. This makes Sanders path to the nomination all but an impossibility at this point.
Update 5: Okay so John Kasich just won his home state of Ohio, and he is the only one who will likely beat Donald Trump tonight. But considering how few delegates he has earned so far does that really matter at this point?
Update 6: Trump wins Illinois. Still too close to call for the Democrats, though Hillary has a comfortable lead.
Update 7: Hillary wins Illinois.
Update 8: Now Hillary has won Missouri so that is five for five tonight.
I think it is clearly time for Bernie to pack up his campaign and make way for the our Democratic nominee to finish the primary process and prepare to do battle against Donald Trump.
Trump may be the most aggressively vicious presidential candidate that we have ever seen, and Hillary is going to need everybody's support to get through the rest of 2016.
Update 9: The story of this night.