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Bernie Sanders' supporters booed Hillary Clinton's name, and gave him a long loud ovation.

FOX's Tonya J. Powers reports from Philadelphia:

Sanders was emotional at times during his speech last night here inside the Wells Fargo Center, but his message was clear, join him and get behind Hillary:

(Sanders) "Based on her ideas and her leadership, Hillary Clinton must become the president of the United States."

His supporters aren't "all in" yet.

At the Democratic National Convention, Tonya J. Powers, FOX News.

Follow Tonya J. Powers on Twitter: @TonyaJPowers

(AP Photo/John Minchillo)
(AP Photo/John Minchillo)

Some supporters for Senator Bernie Sanders are feeling burned and don't know whether they can vote for Hillary Clinton.

FOX's Gurnal Scott explains from the site of the Democratic National Convention in Philadelphia: