Obama Says Republicans Should Withdraw Support for Trump  —  WASHINGTON — In his strongest denouncement of Donald J. Trump so far, President Obama on Tuesday said Mr. Trump was “unfit to serve as president” and urged the leaders of the Republican Party to withdraw their backing for his candidacy.

First on CNN: Ex-top Christie aide backs Clinton over Trump  —  (CNN)Longtime Chris Christie aide Maria Comella says she plans to vote for Hillary Clinton — saying that after Donald Trump's nomination, Republicans are “at a moment where silence isn't an option.”

Rep. Richard Hanna letter: We should all be done with Donald Trump (commentary)  —  U.S. Rep. Richard Hanna, a three-term Republican from Oneida County, represents the 22nd Congressional District.  Hanna is shown speaking last month to firefighters in Binghamton.  (Provided photo)

Trump refuses to support Paul Ryan, John McCain in upcoming Republican primaries  —  Republican presidential nominee Donald Trump is refusing to back House Speaker Paul D. Ryan in his upcoming primary election, saying in an interview Tuesday that he is “not quite there yet” in endorsing his party's top-ranking elected official.

Trump boots baby from Virginia rally  —  Donald Trump asked a woman with a crying baby to leave his rally in Ashburn, Virginia on Tuesday.  —  The GOP nominee initially suggested that he did not mind the disruption.  —  “Don't worry about that baby.  I love babies,” Trump said after hearing …

DNC CEO resigns amid turmoil  —  A trio of top Democratic National Committee officials have left their posts, the organization announced Tuesday.  —  Democratic National Committee CEO Amy Dacey resigned Tuesday, sources with knowledge of the move confirm to POLITICO.

Utah could vote Democrat for president for first time in 5 decades  —  (KUTV) The Republican and Democrat national conventions are over and as the dust starts to settle, it looks like Hillary Clinton has a chance to carry Utah in the U.S. presidential election.

How Jeff Zucker Made CNN Great Again … It's the second day of the Democratic National Convention, and Jeff Zucker is huddled with his CNN staff on the ground in Philadelphia.  Unlike most cable news network chiefs, he is painstakingly involved with the minutiae of hourly coverage …

Donald Trump Avoided Draft With a Heel Problem, but the Details Are Murky  —  Back in 1968, at the age of 22, Donald J. Trump seemed the picture of health.  —  He stood 6 feet 2 inches with an athletic build; had played intramural football, tennis and squash; and was taking up golf.

Medical benefits of dental floss unproven  —  HOLMDEL, N.J. (AP) — It's one of the most universal recommendations in all of public health: Floss daily to prevent gum disease and cavities.  —  Except there's little proof that flossing works.  —  Still, the federal government …

Clinton, Allies Have Reserved $98 Million in Ads  —  Hillary Clinton and her allies are poised for a TV ad blitz of nearly $100 million dollars, compared to less than $1 million currently reserved on the airwaves by backers of Donald Trump.  —  According to ad-tracking data provided to NBC News …

Trump: There's something ‘phony’ about these polls  —  cast doubt on general election polls that show him trailing Hillary Clinton  —  , calling those polls “phony.”  —  “I see some great polls — I see one from the Los Angeles Times, just came out, where were ahead by 4 or 5 points.

Panic Mode: Khizr Khan Deletes Law Firm Website that Specialized in Muslim Immigration  —  Khizr Khan, the Muslim Gold Star father that Democrats and their allies media wide have been using to hammer GOP presidential nominee Donald J. Trump, has deleted his law firm's website from the Internet.

The Religious Right's Dangerous Bet On Trump  —  On July 17, 2015, Donald Trump received a caps lock-heavy campaign memo from one of his advisers containing instructions on how to communicate with a voter species that was especially exotic to the candidate at the time.

Woman, 23, Shot Dead by Maryland Cops; Boy, 5, Wounded  —  Baltimore Standoff Leaves Woman Dead, Child Injured 2:01  —  A woman was shot and killed on Monday when an hours-long standoff at a Maryland apartment ended in an exchange of gunfire that also left a 5-year-old boy wounded.

Poll: Clinton Support Spikes Following Democratic Convention  —  Following the Democratic National Convention, Hillary Clinton now leads Donald Trump by 8 points — 50 percent to 42 percent — up from a single-point difference last week, according to the latest NBC News|  SurveyMonkey poll.