DES MOINES, IOWA—Rick Santorum is so hot right now, you'd think he was the cure to something. When pollsters for the Des Moines Register started contacting Republican voters on Tuesday, Santorum was at 10 percent. By Friday when the polling ended, he was at 22 percent, tied for the lead. If they'd kept calling Saturday, voters might have answered the phone singing the senator's name.
When the days were averaged out, which pollsters do to smooth out anomalies, the findingsput Romney at 24 percent, Ron Paul at 22 percent, and Santorum at 15 percent. Given the trend, it's possible Santorum could win the caucus on Tuesday, which would be a perfect ending to a volatile race.