Collecting John Hancock’s is expensive business. At least when it comes to the Tucson pension drive.

In just over five weeks, the Committee for Sustainable Retirement Benefits has pulled in $93,000 from two national organizations to fund its initiative to give voters a chance to overturn the city’s guaranteed benefit pension system in favor of a 401(k)-style plan.

The Liberty Initiative Fund, the ideological force behind the campaign, has donated $45,000 while the National Taxpayers Union has pitched in $48,000.

Just over $90,000 has already been spent by the committee. All of it to local consulting firm Zimmerman Public Affairs for petition signatures and related expenses.

The committee paid 12 people to gather signatures throughout the month of June. During that time, they collected around 23,000 signatures.

The petitions have gone through a preliminary review by the City Clerk’s Office. They are now being verified by the Pima County Recorder’s Office to see if enough valid signatures exist to qualify the measure for November’s ballot.