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Eight days before voters go to the polls, a strengthening hurricane Sandy has blown the presidential campaign off course. Both President Obama and Republican challenger Mitt Romney have canceled appearances. Both are directing their supporters to donate to the Red Cross. Early voting has been suspended in some states. 聽

But make no mistake, politics stops for almost nothing this close to Election Day. Campaigns ads are still running on TV. And even as both candidates focus on hurricane preparedness, their campaigns are also continuing to press their advantages and seek to minimize the potential political losses that could come from the mammoth East Coast storm.

For Mr. Obama, the potential upside comes as he reverts to his day job as president, projecting authority as he addresses the storm. In an appearance in the White House briefing room early Monday afternoon, Obama urged people in the path of the storm to obey to local authorities, and evacuate if instructed. He didn鈥檛 mention the election until asked by a reporter.

鈥淚 am not worried at this point about the impact on the election,鈥� Obama said. 鈥淚鈥檓 worried about the impact on families, and I鈥檓 worried about the impact on our first responders. I鈥檓 worried about the impact on our economy and on transportation.鈥澛�

But the storm carries a political risk for Obama. If something major goes wrong in the response, it will be on his head.

鈥淗e does not want to be an echo to President George W. Bush's response to hurricane Katrina, which became a symbol of incompetence,鈥� writes Princeton historian Julian Zelizer at CNN.com.

If Obama stumbles over storm response this close to the election, it could seal his fate on Nov. 6. So Mr. Romney could benefit, but only if the president is seen to fail. Romney could also hurt himself if he comes across as overtly political.

鈥淸T]here is little that Mitt Romney can do, other than watch to see what people think of Obama's response,鈥� Mr. Zelizer says, 鈥渂ecause any statement from him could easily become seen as political and offer little evidence of his own ability to lead.鈥�

Romney proceeded Monday with a midday campaign event in Avon Lake, Ohio, but canceled an evening event in Wisconsin. The campaign also canceled two events Monday in Florida by Rep. Paul Ryan, his running mate. All Tuesday events for both candidates have been canceled.

鈥淕overnor Romney believes this is a time for the nation and its leaders to come together to focus on those Americans who are in harm鈥檚 way,鈥� said Gail Gitcho, Romney鈥檚 communications director, in a statement.

But it appears Romney doesn鈥檛 want to disappear from the stage altogether. According to the Associated Press, he鈥檚 considering a trip to New Jersey later in the week to survey storm damage with the state鈥檚 governor, Chris Christie, a top political ally.

And even though the president is grounded until further notice, his top surrogates are not. Vice President Joe Biden and former President Bill Clinton are appearing together Monday afternoon in Youngstown, Ohio. The Obama campaign has also announced that Mr. Clinton will campaign this week in Minnesota, Iowa, Colorado, Ohio, Virginia, New Hampshire, and Wisconsin.

Hurricane Sandy has also blown a hole into early voting in some East Coast states, plus the District of Columbia, but it鈥檚 too soon to say whether the storm will have a major impact on the election鈥檚 results. Most states in the storm鈥檚 path do not offer early voting or no-excuses absentee ballots. One battleground state, North Carolina, does offer early voting, which has been suspended in some coastal counties. Same for Virginia, another battleground, which allows in-person absentee voting but requires an excuse. 聽聽

"If this was a direct hit on Florida, then we would be having a much different discussion about the impact of this storm," Michael McDonald, an expert on early voting at George Mason University in Fairfax, Va., told NPR. "With ample time for local officials to respond and utility companies to restore power, we should have voting places up and running in most places by Election Day."

Still, the Obama campaign has made early voting a central feature of its ground game, and so any limits to early voting could hurt the president鈥檚 prospects. And with the race so close, even the smallest of impacts from the storm could matter.

The latest national poll by the Pew Research Center shows the differences in motivation between Obama voters and Romney voters. Among registered voters, Obama leads 47 percent to 45 percent, which is within the margin of error. But among likely voters, the two are tied at 47 percent each.

鈥淭his reflects Romney鈥檚 turnout advantage over Obama, which could loom larger as Election Day approaches,鈥� Pew states in its report. 鈥淚n both October surveys, more Republicans and Republican leaners than Democrats and Democratic leaners are predicted to be likely voters. In September, the gap was more modest.鈥�