Have you ever wondered how CBS News creates its Battleground Tracker polls? With the 2020 race shifting into high gear, we want to make sure you can follow along with us. Anthony Salvanto joins CBSN to discuss the process behind creating these tracker polls. Source

Former Teen Vogue editor-in-chief and Project Runway judge Elaine Welteroth is now writing about her own experiences Source

Press secretary Sarah Sanders is leaving the White House, President Trump announced Thursday. She’s leaving at the end of the month, and Mr. Trump suggested she would do well to run for governor in Arkansas. CBS News White House correspondent Ben Tracy joins CBSN with the latest. Source

Secretary of State Mike Pompeo says Iran was responsible for the attacks on two tankers in the Gulf of Oman – part of what he called a “series of attacks” by the Islamic Republic. CBS News’ David Martin is at the Pentagon with the latest on the escalating tensions. Source

The U.S. women face Chile in their second match after a 13-0 opening match drumming of Thailand Source

Green says a performance by opera star Denyce Graves motivated him to become a singer. Graves spoke to 60 Minutes in 1996 Source

A massive blackout left more than 44 million people without electricity in Argentina and Uruguay on Sunday after an unexplained failure in the neighboring countries’ interconnected power grid. Source

The federal baseline wage of $7.25 has lost buying power since it was established in 2009 and is worth only $6 in today’s money. Source

Protests continue in Hong Kong over a controversial bill that would allow extradition to China. CBS News correspondent Ramy Inocencio is in Hong Kong with the latest. Source

Before coming to Italy, Knox published an essay in which she slams the media for sensationalizing and profiting from her story for years Source