Candidates look for right time to resume campaign

The Romney camp also announced that a political rally in Des Moines, Iowa, would go on at the same time as previously scheduled Tuesday night, with Ann Romney filling in for her husband as the headliner. Ryan was slated to visit campaign offices in his home state of Wisconsin to thank the volunteers helping to collect relief supplies for storm victims.

Ryan was returning to his regular schedule Wednesday, campaigning across his home state of Wisconsin before going to trick or treat with his children.

Romney campaign spokesman Kevin Madden said the campaign was in contact with local relief organizations and the Red Cross to make sure the supplies they were collecting Tuesday would be useful.

"We checked to make sure the supplies would be helpful and welcomed as part of our volunteer effort. And our own volunteers will be personally delivering the supplies to the relief center," Madden said.

Pickler reported from Washington. Associated Press writers Kasie Hunt in Dayton, Ohio, Philip Elliott in Janesville, Wis., Julie Carr Smyth in Columbus, Ohio, and Jim Kuhnhenn, Julie Pace and Ben Feller in Washington contributed to this report.