While Hillary Clinton was launching a full-frontal attack on rival Bernie Sanders, she was sure to deploy all the weapons in her arsenal, including her reoccurring southern accent.

Speaking Monday to about 300 people in Waterloo, Iowa, Hillary’s twang came and went.

“The prescription drug costs are goin’ way up,” she told the audience with a hint of folksiness. (That’s how all them corn eaters talk.)

“Now I just have a difference with Sen. Sanders. He has a different plan. His plan would … send insurance to the states, turning yours and my insurance to governors,” she said.

The twang re-emerged when she accused Sanders’ plan of bursting the federal “buuudget” by more than 40%.

“I want to be a progressive Democrat who gets things done,” she said, “judged by whether or not they help middle class families,” she said with a drawl. She added, “Whether they improve opportunities for hard workin’ people.”

The migration of Hillary’s southern accent is a bit of a rarity in the northern states. It tends to prefer warmer climates.

While Clinton campaigned in Memphis, Tennessee in November, it took only about 50 seconds for the accent to appear before a crowd at LeMoyne-Owen College.

“I gotta tell you,” Hillary said with a distinct drawl, “I loved coming to Memphis in the past.

“You know, I didn’t live too far away for a long time, just across the river. Do we have anybody from Arkansas here toniiiiight?” she asked.

“Now, after the 2008 election, then president-elect Obama called me and asked me to come see him in Chicagooooo,” Clinton said.

“I didn’t know what he wanted. Turned out he wanted me to be secretary of staaaate.

“But before we talked about that, he said to me, ‘It’s so much worse than they told us.’ I said, ‘Mr. President-Elect, that’s exactly what my husband said to me after that election in 1992,” she said, with the southern drawl seemingly coming and going during her remarks.