Californians for Population Stabilization, a Santa Barbara, Calif.-based nonprofit, is running ads in Arizona against the state's senior senator, Republican John McCain, asking his constituents to call him and tell him to change his stance on immigration reform.

The ad buy, which cost more than $22,000, is scheduled to air through March 29 on the ABC network during prime time and the morning news slot. The group has run similar ads in the past, attacking Sen. Barbara Boxer, D-Calif., and Rep. Kevin McCarthy, R-Calif., during the 2012 campaign, calling them out for supporting increased immigration instead of ...