As John McCainJohn Sidney McCainSenate's defense authorization would set cyber doctrine Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE and Barack ObamaBarack Hussein ObamaGOP rep: North Korea wants Iran-type nuclear deal Dems fear lasting damage from Clinton-Sanders fight Iran's president warns US will pay 'high cost' if Trump ditches nuclear deal MORE flesh out their stances on a wide range of issues this summer, their positions on Iraq separate them most drastically in voters' minds, Rasmussen found.

Americans overwhelmingly say Iraq is the top priority for both candidates, and their goals for Iraq policy are diametrically opposed.

According to Rasmussen, 76 percent of voters think McCain's top priority will be ensuring victory in Iraq; among Democrats, meanwhile, 78 percent think Obama's top priority will be withdrawal.