In Lafitte, a fishing village south of New Orleans, Romney was going to see soaked homes, roads covered with brown water and debris-littered neighborhoods. The GOP-friendly community is outside of the federal levee system that spared New Orleans and it lay on an exposed stretch of land near the Gulf.
Richard Riley rode out the storm in his home. Even though the water was receding Friday, he decided it was time the leave. He walked about a mile to nearby Crown Point and found rescuers, who took him to family members.
Riley said he was in favor of building new flood protection for the area, especially after Isaac brought in a surprising amount of water. Riley, a Republican, welcomed visits from Romney and the president. He said he wanted Obama to help make that happen.
"He needs to see the devastation and allocate the money that's needed to build new levees or do whatever is needed to protect us," Riley said.
Crown Point, Lafitte and other nearby settlements that jut inland from the Gulf are accustomed to high water driven by hurricanes. But Isaac, a relatively weak storm by the standards of Betsy and Katrina, pushed in much more water than expected after it stalled after landfall.
Mike Townsend, an air conditioning technician for the New Orleans school system, said he was interested in what Romney had to say about Isaac, and the candidate's approach to protecting the area without interfering with nature.
"I like his business sense," Townsend said.
To the east, officials pumped and released water from a reservoir, easing the pressure behind an Isaac-stressed dam in Mississippi on the Louisiana border. The threat for the earthen dam on Lake Tangipahoa prompted evacuations in small towns and rural areas.
"So far operations seem to be proceeding as expected, and they seem to be working," Republican Gov. Bobby Jindal said.
In New Orleans, at the Magnolia Discount Gas Station in the Carrollton neighborhood, employee Gadeaon Fentessa said up to 50 drivers an hour were pulling in, hopeful they could pump. He had the gas, but no power. Stations that did have power to pump had long lines.
There were other signs of life getting back to some sense of normalcy. The Mississippi River opened to limited traffic, the French Quarter rekindled its lively spirit and restaurants reopened.
Isaac dumped as much as 16 inches of rain in some areas, and about 500 people had to be rescued by boat or high-water vehicles. More than 5,000 people were still staying in shelters.
The remainder of the storm was still a powerful system packing rain and the threat of flash flooding as it headed across Arkansas into Missouri and then up the Ohio River valley over the weekend, the National Weather Service said.
Labor Day plans were already taking a hit.
Oleg Shneper, manager of the Extended Stay America hotel in the Cincinnati suburb of Blue Ash, said occupancy was down about 10 percent already.
His hotel usually gets business travelers and a lot of people visiting nearby Kings Island amusement park in Mason.
"People have called to say they can't get here because the rain is keeping them from getting out of airports," he said. "We're also definitely not seeing as much family traffic."
Farther south, the storm victims included a man and a woman discovered late Thursday in a home in the hard-hit town of Braithwaite, south of New Orleans; a man killed in a restaurant fire; two men killed in separate car accidents and a man who fell from a tree.
In Louisiana alone, the storm cut power to 901,000 homes and businesses, or about 47 percent of the state, but that was down to 617,000.
More than 15,000 utility workers began restoring power to customers in Louisiana and Mississippi, but officials said it would be a couple of days before power was fully restored.
Crews intentionally breached a levee that was strained by Isaac's floodwaters in southeast Louisiana's Plaquemines Parish, which is outside the federal levee system. Aerial images showed the water gushing out. Gov. Bobby Jindal said officials expected 70 percent of the water on the east bank to disappear because of the release and changing wind direction.
In Mississippi's Bay St. Louis, Allen Barrilleaux, spent Friday morning draining water from the engine of his flooded truck not far from a river.
He was going to ride out the storm with his wife, a friend, and 5-week-old son in their house, which is on stilts, but called for help Wednesday when the water came closer and large pine trees from a nearby mill swirled in the water. They were evacuated by boat.
Watching for ant beds as he walked around his green Chevy, Barrilleaux said hurricanes are part of life here, but disasters can hit anywhere.
"Life's cruel," Barrilleaux said, gripping a wrench with a greasy hand. Then he smiled.
"We're like that big old ant hill and a guy with a lawnmower just keeps mowing us down."