"Let's face it, it's hard to run a campaign in North Carolina," Marshall said. "You can't do it without some outside money. So these are the things I'm assessing."
Marshall has joined a Facebook group urging her to run.
"Elaine Marshall has never shied away from a challenge," the page explains. "Join our group to urge Secretary Marshall to run for U. S. Senate."
Previously: Potential candidates for Senate 2010.