GRAND RAPIDS, MI — Democrat Steve Pestka has given his own campaign against incumbent U.S. Rep. Justin Amash a $1.05 million cash infusion, according to a campaign finance report published this week.

The October quarterly report shows Pestka, a small business owner and former judge, donated $480,000 alone, nearly half the total amount, to his campaign between July 19 and Sept. 30.

The filings with the Federal Election Commission show Pestka raised less in the third quarter from individual donors and groups than did Amash. The filings show Pestka raised $131,507, but spent $899,353.

Related: Why Amash, Pestka think they deserve your support for 3rd Congressional District

His campaign's cash-on-hand totals $162,287, according to the filings.

In all, the filing shows Pestka has raised $358,372 during this election cycle, and has spent $1.24 million.

Some $89,550 of the amount raised has come from groups such as political action committees, who donated $55,000 in the third quarter, according to the filings.

Amash, of Cascade Township, raised $201,713 between July 19 and Sept. 30, and spent only $125,397, his own election committee's filings show.

Of the amount raised, $44,000 came from political party committees and others such as political action committees.

The Amash campaign has cash-on-hand totaling $482,892, although new TV commercials for the candidate that began airing this week in West Michigan might have since dented that figure.

Amash has raised nearly $1.13 million during this election cycle, according to the filing. His campaign has spent $697,263.

A Pestka polling firm published a report last week showing the candidate is closing in on Amash, though the latter's campaign disputes that finding.

The Greenberg Quinlan Rosner Research poll, conducted Oct. 8 to Oct. 9, shows Amash nabbing 48 percent of votes, with Pestka garnering 44 percent.

That same poll found Amash had 74 percent name-recognition among voters to Pestka's 58 percent.

"Steve Pestka can release as many phony polls as he wants, but it doesn't change reality," Amash spokesman Daniel Estrada told MLive on Friday. "This is not a close race. The Third District remains the second-most Republican in the state, and Rep. Amash has huge crossover appeal.

Related: Grand Rapids Mayor George Heartwell endorses Pestka

"In 2010, similar fake polls showed a tight race, and Rep. Amash still won by 23 points."

Pestka spokesman Steve Coon fired back at allegations of impropriety in the poll.

"This poll shows what we have said all along — the people of West Michigan and the Third Congressional District want a representative who represents the people, not a rigid, predetermined ideology," Coon told MLive.

Staff writer Angie Jackson contributed to this report.

Zane McMillin may be reached through email and Twitter.