treat alzheimer s. what it does and the potentially risky side effects. president biden marking two years since the january 6th attack. his message as he honored heroes who defended the capitol. tonight s mega millions jackpot nearing $1 billion. and my conversation with al roker as he returns to the today show. new details about the health battle that kept him off the air for two months. good evening. it s now been 13 votes and still no speaker of the house of representatives has been chosen. but we can report tonight the wall of right-wing opposition that kept republican kevin mccarthy out of the speaker s chair is crumbling tonight. 15 fellow republicans who have helped block the path to the job today switched their support to the mccarthy camp. after some deal making. and there is growing expectation tonight that mccarthy now has the momentum he needs for victory as the house prepares to hold its 14th round of voting late tonight. but for now, for a fourth evening