A look at some of tomorrow’s top talkers from Washington Post reporters and columnists who know the topics best.

McCARTHY AS NEXT HOUSE LEADER: House Majority Whip Kevin McCarthy (R-Calif.) was chosen to serve as the next House majority leader. The Post’s live blog features updates from Capitol Hill. The Fix explains why McCarthy’s rise is unprecedented. Paul Kane outlines the 4 most important whip races in congressional history.

WISCONSIN GOV CRIMINAL SCHEME ALLEGATIONS: Prosecutors are alleging Wisconsin Gov. Scott Walker was part of a “criminal scheme” to illegally coordinate with outside conservative groups. Earlier this year, Rosalind Helderman reported on internal e-mails that showed Gov. Walker as hands-on tactician fixated on public image. In a video with PostTV, Walker responds to a question about his own plans for 2016.

IRAQ CRISIS: As the U.S. seeks to replace Iraq’s prime minister, the White House told Maliki time was short for his Shiite-dominated government to reach out to Sunnis and Kurds. Meanwhile, President Obama says he is sending 300 advisers to help Iraqi forces deal with an onslaught by radical Islamist fighters. The former U.S. ambassador to Iraq writes that the situation there is utterly terrifying and was totally predictable.

HEALTHCARE: About six in 10 people who bought their own health insurance through Affordable Care Act exchanges were previously uninsured and affordability remains a major concern for people buying their own coverage, according to a Kaiser Family Foundation survey. The findings are an early view into the impact of Obamacare’s coverage expansion on the individual health insurance market after taking effect in January, reports Jason Millman. Also, a review of 14 diverse big cities finds that the cities in states that are expanding the low-income health care program will see roughly twice the decline in the number of insured compared to cities in states not opting for the expansion.