Full Coverage of the Colorado Massacre is at ABCNews.com

Gun Laws - There's not much national politicians can do during times of senseless violence from a lone wolf. And there's not much indication that either Romney or Obama has much interest in pursuing any changes to gun laws after this particular tragedy.

Both of these candidates have angered their respective bases in the past on gun control. Obama hasn't done enough. Romney did too much.

In 2010, the Brady Campaign gave Obama an "F" for his "lack of leadership" on gun control. Romney signed into law the first permanent state assault weapons ban.

But an assault weapons ban, while it could presumably keep someone from obtaining an AR-15 with an extended clip to use in a movie theater, wouldn't do anything to stop a maniac from purchasing the shotgun and buckshot and handguns he also used.

Both Obama and Romney have supported such bans in the past. More on the candidates and gun laws - http://abcn.ws/NDe5Ng

Romney, interestingly, is the only one of the two candidates to have signed one into law - he made a Massachusetts version permanent in 2004 just as the federal version was about to lapse. But he would be quick to point out that what he signed had support among some gun rights groups.

Obama has s been notably silent on the issue of gun control during his presidency, in spite of at least four major mass shootings during his term - Binghamton, N.Y. (2009); Fort Hood, Texas (2009); Tucson, Ariz. (2011) and now Aurora, Colo. http://abcn.ws/Plqsff (Devin Dwyer)

Michael Bloomberg was the first to propose revisiting national gun laws. He did it within hours of the Colorado tragedy.

Political Cowardice - Former Pennsylvania Gov. Ed Rendell was more pointed on MSNBC. He said allowing the assault weapons ban to lapse was "an act of cowardice" on both sides of the political aisle. Fear of the NRA, he argued, is bipartisan. http://abcn.ws/OGltrX

Louie Gohmert, the Texas Congressman, took the opposite view, wondering during an interview why nobody in the theater was carrying a weapon and could have stopped the rampage. http://abcn.ws/LD8xnB

The campaigns took a day off after the tragic movie theater shootings in Colorado. "There are going to be other days for politics," said President Obama after quieting a crowd in Florida.

Romney said a prayer during a brief event in New Hampshire - http://abcn.ws/LCveYY

Both sides (and their allies) pulled all ads from Colorado - http://abcn.ws/Oex3c6

Non-Colorado Elements:

Bush Will Skip GOP Convention - http://abcn.ws/QaddUR

Zoos Are Expensive: Newt Gingrich's 7 Largest Campaign Creditors - Somehow, Newt Gingrich's debt is growing. He's no longer running for president, but as is always the case with erstwhile candidates, his campaign committee lives on, raising money and incurring minimal costs, as it continues its financial wind-down. http://abcn.ws/PrqllT (Chris Good)

Veep Beat: VP Clock Ticks Before Romney's International Trip- The timetable for Mitt Romney to announce his running mate decision before his international trip is pretty much gone with the events in Colorado overtaking the national attention. Most of the VP contenders have returned to their home states with Rob Portman scheduled to appear at Dannon Yogurt headquarters in Ohio today along with hosting a fundraiser for Romney in Lima, Ohio. Tim Pawlenty is still expected to be at his home in Eagan where he's been all week. http://abcn.ws/Oedn88 (Arlette Saenz)

Goat Mayor Castrated? That's Nuts! Also Dogs, Cats and a Mini-jackass in Politics http://abcn.ws/OeTjT7 (Jilian Fama)