63 years after the original March on Washington, Americans return to "Defend the Vote" against Donald Trump's repeated attempts to undermine our elections. Plus, the president claims he can rename Lake Ontario as "Lake America," while he continues to dismiss voters' affordability concerns. Christina Greer, John Fugelsang, Hunter Walker, and Neville Lazarus all join the 11th Hour with Ali Velshi.

We take stock of Trump's war of choice with Iran, six months in. Plus, new polling reveals a game-changing shift in Texas for Democrats ahead of midterms. And a brand-new ruling temporarily block on President Trump's moves against mail-in voting. Bobby Ghosh, Barbara Starr, Gina Hinojosa, and David Becker all join the 11th Hour with Ali Velshi.

24 states sue to block a new Postal Service rule restricting mail-in ballots. Plus, groups report a spike in U.S. troops seeking to leave the military as conscientious objectors. And, Pennsylvania sees its first confirmed deaths from measles in 35 years. Jena Griswold, Priya Sridhar, Paola Ramos, and Josh Einiger all join the 11th Hour with Ali Velshi.

Election night in South Carolina, Oklahoma, and Georgia. Plus, remembering country music icon Dolly Parton. And a new lawsuit against Trump's mail-in voting executive order. Annie Andrews, Brian Mansfield, Alex Tabet, Rep. Chellie Pingree, and Dion Nissenbaum all join the 11th Hour with Ali Velshi.

President Trump just won a partial victory in his bid to turn the U.S. Postal Service into a political weapon against voters. Plus, the data center backlash is coming for Republicans. Joyce Vance, Nnamdi Egwuonwu, Adrian Fontes, Justin Wolfers, and Pat Garofalo all join the 11th Hour with Ali Velshi.

Campaigning for Sen. Darline Graham in South Carolina Trump says, "We're the smart country now, not the dumb country," as advisers worry his approval will fall below 30%. Plus Paul Tremblay joins the Velshi Banned Book Club. Abby Livingston, Hunter Walker, Nevada Secy. of State Cisco Aguilar, and Paul Tremblay all join the 11th Hour with Ali Velshi.

As President Trump continues ballroom construction, he challenges institutions meant to keep everyone in check. Plus, Congressional Democrats add 5 candidates from "Red to Blue" list for the midterms. Corey Brettschneider, Lt Col Leela Gray, Zach Dembo, Harry Sisson, and Nikki McCann Ramirez all join the 11th Hour with Ali Velshi.

A new Senate rating changes the math for November. Plus, President Trump is leading Republicans into a political trap on a sleeper issue that could change the course of the midterms. Adrian Fontes, Nathaniel Herz, David Jolly, and Josh Einiger all join the 11th Hour with Ali Velshi.

Primary results from Florida included a surprise win for the progressive state legislator Angie Nixon in the Democratic primary for Senate, as well as wins for David Jolly and Byron Donalds in the Democratic and Republican primaries for governor, respectively. Plus, a preview of Alaska's primary elections, where Democrats hope former Rep Mary Peltola can flip a Senate seat blue. Maya Wiley, former Rep. Max Rose (D-NY), Nathaniel Herz, and Jared Bernstein join The 11th Hour with Ali Velshi.

A 19-year-old sailor aboard the USS Lincoln jumped overboard amid poor conditions and sinking morale during the ship's extended deployment due to the war with Iran. Plus, the latest on ICE's aggressive tactics and President Trump's attempted takeover of the Kennedy Center. Rep. Seth Moulton (D-Mass.), Paola Ramos, Harry Sisson, and Aaron Parnas join guest host Catherine Rampell on the 11th Hour with Ali Velshi.