I’ve seen no evidence of Santorum bowing out. In fact, all of his statements say otherwise. He’s going to caucus states, like yours.
His public statements aren't useful as a guide. All the candidates say they are "all in" until one day, they are suspending campaign activity. The evidence that he'll suspend within the next 2-3 weeks is basically embedded in his ballot performance and his campaign's financial condition. He's leaving FL before Tuesday, for non-emergency reasons.
-- He's going to caucus states, like yours. --
Ron Paul is planning to come to Maine before next Tuesday. I haven't found any statement of Santorum intent or schedule.
Ahh, I found a recent remark attributed to Santorum's campaign ...
"We have staff in Colorado. We have staff in Nevada. We have grassroots programs underway in both of those states," Santorum said. "We are in the process of - we've got some volunteers doing similar things in Minnesota, but we don't have a staff there in Minnesota or Maine. We're focused more on Nevada and Colorado. We think there are maybe better opportunities for us. And we also have ... a lot of folks helping us in Missouri for the primary vote there coming up in."Rick Santorum Says He's Going Nowhere, in It for 'Long Haul' - ABC News