Republican governor candidate Mike Pence was the first in that race to release fundraising data filed today in the three-way race.
He reported raising $3 million in the second quarter of 2012, bringing his total raised for the campaign to almost $10 million.
He closed the quarter with more than $5.5 million on hand, a news release said.
Pence has been running statewide TV ads since mid-May, while his competitors have not yet hit the airwaves.
Democrat John Gregg is trailing Pence, even while announcing Monday he tripled his fundraising pace in the second quarter.
A news release from Gregg showed he raised about $1.8 million and has almost $3 million in cash on hand, with no debt.
Libertarian Rubert Boneham has until noon to file a campaign finance report.
To contact Niki Kelly email her at firstname.lastname@example.org or follow her on Twitter @nkellyatJG.