Barack Mitt Som / Sam Clovis / Ernst Favorability / Marrk Jacobs / Tom Jenseen / Sam Clovis Base Paul Lunde / Joni E Ernst / Scoott Schaben / Matt M Whitakeer / Matt Whitaker / Sam Clovis Man Branstad / Scott Schaben / Mark Jacobs / Paul Lunde / Bruce Braley / Tom Hoefling / Preference Very Som / Joni Errnst / Barack Obama / Paul Lunnde / Jack Hatch / Joni Ernst / Terry Branstad / Dean D Debnaam / Tom Harkin / / /