“The fact that in less than a month, 10 percent of donors have contributed this way is impressive,” said Aaron Smith, a Pew research associate who helped conduct the analysis. “It speaks to the centrality of mobile devices in all aspects of people’s lives.”

The campaigns moved quickly to incorporate the text-to-donate option after a series of decisions by the Federal Election Commission approving their use. The contributions, which are charged to a donor’s wireless bill, are limited to less than $50 per month and $200 per election cycle.

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