Democratic presidential candidate Hillary Clinton speaks at a campaign event in Oskaloosa, Iowa, on Jan. 25, 2016. REUTERS/Rick Wilking

DES MOINES, Iowa -- Among Democrats in Iowa, the story is often the same: voters torn between former secretary of state Hillary Clinton and Vermont Sen. Bernie Sanders say it's about their head battling their hearts.

President Obama described it another way: It's Sanders's poetry vs. Clinton's prose.

Clinton addressed that conflict when describing her interaction with an undecided voter who said he vacillated between supporting her and Sanders. 

"Well, you can have it both," Clinton said at an event in Osklaoosa on Monday. "What I have done my entire life... was to do everything to help people who were really up against it  — the odds were stacked against them."

Clinton's campaign has largely been an argument for practicality over passion. She tells voter time and again that her proposals are more practical than her opponents. She warns them that the next president will face domestic and geopolitical hurdles, and that those who promise easy progress aren't seeing the world as it really is.

But eight days away from the Iowa caucuses -- with polls showing Sanders and Clinton in a neck-and-neck race -- that argument doesn't appear to have prompted Sanders supporters, or those leaning toward him, to make a break for her campaign.

Her answer on Monday provided perhaps the most succinct argument for how she hopes voters will settle the debate.

"Yeah, you need to lead with both your heart and your head. It’s not either or," Clinton said. "You’ve got to take what you hear from people, what they’re telling you, sharing with you, the heartache they’re feeling and you’ve got to roll up your sleeves and get to work and do everything you can to solve the problems that are keeping Americans up at night."