UPDATE 9:58 p.m. ET: Rick Santorum's campaign confirmed Wednesday they raised $1 million in the past 24 hours, with $800,000 coming from online donations.
Santorum will be a guest on CNN's "John King, USA" at 6 p.m. ET Thursday.
(CNN) - The day after winning big in Missouri, Minnesota and Colorado, Rick Santorum’s campaign said they received an overwhelming response online, at one point seeing their website crash because of high volume.
A source with the campaign said Santorum’s website received twice as much traffic Wednesday as the day following the Iowa caucuses, which Santorum ultimately won.