Detailed text transcripts for TV channel - CNN - 20190517:22:41:00
Hope of retaking the white house. let gee l let's go to our political reporter where the former vice president is about to hold the first major rally of his 2020 campaign. >> reporter: that's right. joe biden has been a presidential candidate for three weeks and he's about to enter a new phase of this campaign here in philadelphia. biden has been traveling across the country over the past three weeks starting with his first event in pittsburgh. also here in pennsylvania. a state they are trying to place a lot of emphasis on in his campaign. tomorrow he will be talking about his vision for unit...
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