Manchester, New Hampshire (CNN) - Former House Speaker Newt Gingrich is beefing up his efforts in New Hampshire by hiring his first four paid staffers in the state, his campaign announced Wednesday.
The announcement comes a day after Gingrich told reporters in Concord that his fundraising levels had spiked in October. The former speaker was in town Tuesday to file his paperwork for candidacy in the state's primary.
Last week, the campaign hired rising conservative activist Andrew Hemingway, who was chairman of the New Hampshire Liberty Caucus.
The other three hires came this week, including former Bachmann staff member Mattheau LeDuc. LeDuc resigned from Rep. Michele Bachmann's campaign last week, along with the rest of her New Hampshire staff.
He will serve as Gingrich's communications director in the state. The campaign also hired Alex Talcott as coalitions director and Pam Smith to coordinate volunteers.
At a press conference Tuesday in Concord, Gingrich said his performances in a series of debates have shown voters that he is a serious candidate. The campaign said it had raised more than $800,000 in October - more than Gingrich had brought in during the entire previous quarter.
The candidate also suggested that Republican frontrunner Mitt Romney might not have a lock on the state.
"The governor has a strong lead here, but the campaign has only begun," Gingrich said.
In a new CNN/Time/ORC International poll, Romney received 40% support from Republicans and independents in New Hampshire. Gingrich came in fifth with 5%.
However, only 32% of those polled said they would "definitely support" the candidate they had currently chosen.