New York City Mayor Bill de Blasio announced a run for the Democratic presidential nomination early Thursday, becoming the 23rd person to join the race. The announcement comes after months of speculation and visits to primary states. The candidate will travel to Iowa later Thursday and then to South Carolina at the weekend to address voters, The Wall Street Journal reported. Market Pulse Stories are Rapid-fire, short news bursts on stocks and markets as they move. Visit MarketWatch.com for more information on this news.