Residents of New Orleans barely catch their breath after Mardi Gras before festival season begins, celebrating everything from music to po'boy sandwiches. But Democrats are putting on their own version of festival season across the United States. Enthusiastic crowds are turning out for a number of the candidates who've declared their intention to run for president. California Senator Kamala Harris, the most prominent female candidate in the group, attracted full houses at her appearances this weekend in the key state of South Carolina. It was the third time she had visited there in her nascent campaign. Ms Harris' fans include...