Kamala Harris has suffered a blow in a poll that looked at how alternative Democratic candidates would do in swing states. There have been calls for U.S. President Joe Biden to be replaced as the Democratic candidate since the world watched his poor performance in his debate with Donald Trump on June 27. Many have assumed the vice president would be the obvious choice, but a new poll shows she doesn't fare as well as others, and she wasn't among the four who performed best. Analytics company BlueLabs carried out research to determine who would increase the number of people...
