Sen. Bernie Sanders (I-VT) praised Gov. Tim Walz (D-MN) during a visit to his state this week, suggesting he may have a favorite candidate as Democratic presidential nominee Kamala Harris considers who to select as her running mate.

Sanders traveled to Minnesota, to join Rep. Ilhan Omar (D-MN) on Saturday for a rally ahead of the state’s Aug. 13 congressional primary elections. A day earlier, he spoke highly of the governor, who is reported to be on Harris’s vice presidential short list, in an interview with Minnesota Public Radio.