Sen. Kennedy has malignant brain tumor  —  BOSTON - Sen. Edward M. Kennedy has a malignant brain tumor.  —  Doctors for the Massachusetts Democrat say tests conducted after Kennedy suffered a seizure this weekend show a tumor in his left parietal lobe.  Preliminary results from a biopsy …

McCain Confronted With New Iran Gaffe, Gets Facts Wrong Again (VIDEO)  —  Yesterday, Time's Joe Klein noted that he could find no evidence that Sen. Barack Obama had ever specifically said he would negotiate with Mahmoud Ahmadinejad: … Later in the day, Klein confronted McCain with this question at a press conference.

Key Clinton Constituencies Moving Toward Obama  —  Obama now competitive among women, whites, and the less educated  —  PRINCETON, NJ — Gallup Poll Daily tracking has documented a surge in Democratic voters' support for Barack Obama over Hillary Clinton in recent days …

McKinnon To Step Aside From McCain Effort  —  Mark McKinnon, the lead media consultant for Sen. John McCain's (Ariz.) presidential bid, is stepping down from that role — making good on a pledge he made last year not to work against Sen. Barack Obama (Ill.) in the fall campaign.

Voters In Oregon, Kentucky Weigh In Today  —  Early Exit Polls Show 80 Percent Of Clinton Voters In Ky. Would Be Dissatisfied With Obama As Nominee  —  (CBS/AP) Barack Obama competed with Hillary Rodham Clinton in Kentucky and Oregon primaries on Tuesday, the latest contests …

Musgrove Leads Wicker By Eight In New Poll  —  email this print this del.icio.us digg this rss feed  —  Poll, House Election Results Show Mississippi Voters Ready for Change in Washington  —  Former governor Ronnie Musgrove leads appointed Senator Roger Wicker by 8 points …

Talking Versus Doing  —  In 1965, Mancur Olson wrote a classic book called “The Logic of Collective Action,” which pointed out that large, amorphous groups are often less powerful politically than small, organized ones.  He followed it up with “The Rise and Decline of Nations.”

‘Bush intends to attack Iran before the end of his term’  —  US President George W. Bush intends to attack Iran in the upcoming months, before the end of his term, Army Radio quoted a senior official in Jerusalem as saying Tuesday.  —  The official claimed that a senior member of the president's entourage …

As Primaries End, Clinton Appeals Directly to Blogs  —  As Hillary Rodham Clinton decries the mainstream media for diminishing her chances of capturing the Democratic nomination, she is turning more to the Internet to make her increasingly urgent case.  —  She held her first blogger …

Govt. May Have Massive Surveillance Program For Use In ‘National Emergency,’ 8 Million ‘Potential Suspects’  —  Last year, former deputy attorney general James Comey revealed that in 2004, he refused to “certify” the legality of certain aspects of the National Security Agency (NSA) spy program.

Older Brain Really May Be a Wiser Brain  —  When older people can no longer remember names at a cocktail party, they tend to think that their brainpower is declining.  But a growing number of studies suggest that this assumption is often wrong.  —  Instead, the research finds …