After traveling to Texas and delving deep into Rick Perry’s history, TNR’s Alec MacGillis has written what we think is the definitive profile of the Texas governor. And tonight, you can hear him tell even more of the story. At 8:00 EDT, Alec will appear on MSNBC’s “The Last Word with Lawrence O’Donnell” to discuss his story (which appears on the cover of the October 20 TNR).

Beltway commentators have offered no shortage of uninformed speculation and armchair commentary about the Texas governor, but MacGillis did the hard, old-fashioned work of reportingHe traveled around the state and spoke with longtime Perry confidants, Texas political insiders, senior campaign strategists, and many of the beneficiaries of the governor’s unique way of conducting state business—and he came to a different conclusion about what really drives Rick Perry. Tune in tonight at 8 P.M. Eastern to hear his uniquely-informed take on the Republican frontrunner.