Fredreka Schouten

USA TODAY

WASHINGTON — A super PAC encouraging Democrat Hillary Rodham Clinton to seek the presidency in 2016 raised $2.75 million during the last six months of 2013, the group announced Tuesday night.

That brings to $4 million the amount that the Ready for Hillary super PAC has collected to support the former secretary of State. More than 25,000 people contributed to the group after July 1 — more than three times the number of donors the group had during the first half of the year.

Clinton, who has been busy writing and giving speeches, plans to announce her political intentions this year.

"Thanks to the groundswell of enthusiasm for Hillary's potential run and the steadfast commitment of our supporters, we have exceeded our goals and are ahead of schedule in raising the funds necessary to build a grassroots army that can be activated the moment Hillary makes a decision," the group's executive director Adam Parkhomenko said in a statement.

The average contribution was $82, the group said.

It has focused on building grassroots support for a potential Clinton bid and also touted the 1.5 million Facebook supporters it has attracted in the last year.