Responding to criticism from Democrats, campaign aides to Gov. Sarah Palin on Tuesday defended her practice of billing Alaska taxpayers for more than 300 nights she spent at home in her first year-and-a-half in office.

Ms. Palin received a “per diem” expense allowance for 312 nights she spent at her home in Wasilla, The Washington Post reported on Tuesday.

The $60-a-day allowance is available for state employees when traveling on official state business to cover meals and other sundry expenses. Ms. Palin’s per diems, which included some charges for partial days, totaled $17,059, from Dec. 4, 2006, when she took office, through June 30, 2008, the most recent data available, according to Sharon Leighow, a spokeswoman for the governor’s office. Ms. Palin’s salary is $125,000 a year.

Ms. Palin was able to receive the allotment while she was at home because her official “duty station” is listed as Juneau, the state capital, aides said. That allowed Ms. Palin to file for per diems while she was working out of her Anchorage office and commuting from her home about 45 miles away in Wasilla. Juneau is nearly 600 miles away.