The Sunflower State has emerged as perhaps the unlikeliest Senate battleground this year, with Republican Sen. Roger Marshall locked in a surprisingly tight contest with Democrat Adam Hamilton, writes NBC News' Steve Kornacki. ↧ The Data Dive: Steve Kornacki on how Kansas became a surprise midte... It’s been nine decades since Democrats won a Senate seat in this deep-red state. But there are signs that GOP Sen. Roger Marshall has a fight on his hands.