Sarah Palin endorses Donald Trump in Republican primary

Welcome to Trail Guide, your host through the wilds of the 2016 presidential campaign. It’s Tuesday, Jan. 19, and here’s what we’re talking about:

  • Sarah Palin is backing Donald Trump’s candidacy for the Republican presidential nomination
  • Gov. Terry Branstad says that Iowans voting for Ted Cruz would be making a mistake
  • The attacks between Republican front-runners Trump and Cruz are growing nastier
  • Ben Carson temporarily suspends campaign after volunteer dies in a car accident
  • Cruz accuses Trump of party-hopping, and not the fun kind
  • At the Democratic debate in South Carolina, courting the support of black voters was at the forefront for Hillary Clinton, Bernie Sanders and Martin O’Malley