The twelfth GOP debate will present the four remaining Republican hopefuls.
Expect Texas Sen. Ted Cruz, Florida Sen. Marco Rubio and Ohio Governor John Kasich to present their case to the American voters that they are worthy for the Republican nomination.
Also, GOP front-runner Donald Trump is expected to defend himself against criticisms.
A Republican candidate needs 1,237 delegates to get the presidential nomination.
As of this writing, Trump has 419 delegates to Cruz's 326.
Rubio has 146 and Ohio Gov. John Kasich has 51.
On March 8, candidates will compete to convince 150 delegates.
The next red-letter day will be March 15, when voters in fives states go to the polls.
On Saturday, Trump and Ted Cruz each won two states, furthering their case that it's now a two-candidate race—though Rubio can point to Sunday's win in Puerto Rico.