(Chris Detrick | Tribune file photo) Registered Republican voters crammed into caucus meetings in neighborhoods atround the state in March, an unprecedented turnout that is expected to dilute tea party clout in the GOP. Courtesy image This ad is one bought by Freedom Path, one of several outside groups supporting Sen. Orrin Hatch against challenges by nine GOP rivals, including former state Sen. Dan Liljenquist. Some $1.5 million was spent by outside groups, including $571,000 by Freedom Path. The single biggest spending PAC was FreedomWorks, which campaigned against Hatch. (Kim Raff | Tribune file photo) Dan Liljenquist attended the Republican caucus at Mueller Park Junior High School in Bountiful last week. He appears to have been been bested by pro-Hatch forces despite big spending support by outside groups. (Chris Detrick | Tribune file photo) U.S. Sen. Orrin Hatch attended the Republican caucus at Washington Elementary School last week. From all accounts, it appears the six-term incumbent did well with delegates and outside groups played a role with massive spending.