Harris expected to announce running mate before August 7, sources say CNN 0 127 07.28 02:50 https://www.youtube.com/watch?v=heiy2WvZIe4 + 16 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 15 Harris expected to announce running mate before August 7, sources say