On Wednesday’s NewsHour…

BY newsdesk  May 19, 2010 at 6:12 PM EST

PRIMARY ELECTION ANALYSIS | Democrats and Republicans continued to voice anti-incumbent sentiments with their votes during Tuesday’s primary elections. Jim Lehrer talks to Amy Walter, editor-in-chief of The Hotline and Dan Balz, senior political writer for The Washington Post, about the loss by longtime Pennsylvania Sen. Arlen Specter and the high stakes for several more established politicians.

THAI PROTEST LEADERS SURRENDER | Nick Paton Walsh of Independent Television News reports on the ongoing clash between authorities in Thailand and “Red Shirt” anti-government protesters seeking to topple the prime minister. Then Judy Woodruff talks to Richard Doner, a professor of political science at Emory University, for more on what’s behind the violence.

GULF COAST OIL LEAK UPDATE | The State Department engaged in rare talks with the Cuban government, amid fears that strong currents could carry the spreading oil slick eastward. Jeffrey Brown talks to BP’s Managing Director Robert Dudley about the Gulf oil leak as lawmakers and other companies point blame at the company.

MEXICAN PRESIDENT VISITS WASHINGTON | Mexican President Felipe Calderon met with President Obama to discuss concerns about Arizona’s new immigration law and the need for changes to U.S. immigration policy. Margaret Warner reports on his Washington visit.

PARAMEDICS UNDER FIRE IN MEXICO’S DRUG WAR | In the heart of the Mexican drug war in Juarez, emergency medical technicians face unique challenges as they respond to the bloodshed. Global Post reporter Ioan Grillo reports from Mexico

Thursday’s anchors are Jim Lehrer and Jeffrey Brown. Kwame Holman will have the day’s other top news stories and a look at Web features, including Dante Chinni’s county-level primary election analysis on Patchwork Nation, a Q&A about the plan for a new stock market “circuit breaker” to prevent crashes and an Art Beat report about how art therapy is helping soldiers cope with combat-related stress.

There’s also the story of a soccer film festival touring small towns in South Africa.

We hope you’ll join us.