Last night, the four remaining candidates for the Republican presidential nomination took the stage in Mesa for the party's 20th presidential debate of the election cycle.

There's less than a week to go before Arizona's presidential primary, and according to the pollsters, the race is tight -- likely to be taken by either Mitt Romney or Rick Santorum.

Last night's debate probably didn't help clear things up too much either.

Read the recap of last night's debate by clicking here.

Romney differed in opinion on immigration from Maricopa County Sheriff Joe Arpaio -- although he claimed he's singlehandedly toss out the lawsuit against the state's immigration law -- while Santorum puckered up a bit to the sheriff.

Neither Arpaio nor Governor Jan Brewer have endorsed any of the (remaining) candidates as of yet.

Still, we'd like to hear from you -- who won last night's Republican debate?

Cast your vote below: