Democratic presidential candidate Bernie Sanders Bernie SandersMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters Why Democrats must confront extreme left wing incitement to violence MORE shut down supporters on Tuesday who booed when he mentioned rival Hillary Clinton.

Sanders brought up a difference he and Clinton have during an event he held.

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"Let me give you an example of one of the areas where my opponent, Secretary Clinton, and I have a strong disagreement," he said.

When people in the crowd started booing after he mentioned Clinton's name, Sanders shut them down.

"I respect Secretary Clinton," he said.

"We can have differences," he added, to cheers.

Sanders and Clinton are battling for the Democratic nomination. Clinton has a 5.6 point lead nationally over Sanders, according to the RealClearPolitics average of polls.