Six weeks later, he has made significant headway in catching up with Democratic opponent John Gregg.
The question is: Did it come soon enough to allow the relatively unknown Holcomb to effectively get his message out to voters before Election Day?
Holcomb had only about $20,000 in his campaign account when he was selected to replace Gov. Mike Pence as the GOP nominee for governor in late July. By comparison, Gregg had more than $5 million on hand.
Then came another setback for Holcomb: Pence, who had pledged his financial support, could transfer only a fraction of his $7 million in campaign cash because of a federal prohibition that appears to have taken both campaigns by surprise.
Holcomb has raised more than $4.2 million in large contributions (those worth more than $10,000) since becoming the nominee on July 26. Gregg has raised just $785,000 in large contributions during that same period. Smaller donations won't be reported until October.
"On large contributions, we’ve out-raised him three to one, and we’ve only been at this five weeks," said Pete Seat, a spokesman for the Holcomb campaign. "We feel great about the momentum of our campaign and the momentum of our fundraising."