Just one day ahead of the next Republican primary debate in Las Vegas, new polling has Donald Trump at a new high of 41% in national polling. This as the attacks continue between Trump and Senator Ted Cruz. NBC News’ Katy Tur and Hallie Jackson report from Las Vegas.Dec. 15, 2015
UP NEXT
Why Mike Johnson is sounding like a 'Republican from the before times'
05:43
Is Trump the frontrunner in the general election? Not so fast
05:10
Michael Steele: Johnson may have to sacrifice his speakership to get something done
05:33
Embattled Mike Johnson kept in check by conservative House 'FART' team
03:34
Bill Barr latest craven Republican to lose spine, back Trump despite criticism
08:02
Joe: GOP investigation of Biden is 'political garbage'