U.S. Sen. David Vitter, a Republican running for governor this year, is expected to announce this week that his gubernatorial campaign has raised $1.1 million in the first quarter of 2015.

The Fund for Louisiana’s Future, a political action committee supporting Vitter but operating independently, meanwhile raised about $680,000 during the same time period. It has raised more than $4.6 million to date and is expected to report having $3.5 million cash on hand.

The other major candidates for governor — Republicans Scott Angelle and Jay Dardenne, and Democrat John Bel Edwards — have not yet filed or announced their fundraising figures.

Campaign finance records for the first quarter of the year are due next week. The reports cover Jan. 1 through April 17. The next reporting deadline will be July 27.

The Vitter campaign says it has raised about $5.2 million from 8,000 contributors since it launched last year and has $4.2 million cash on hand. During the first quarter of this year, about 2,400 people contributed to the Vitter camp.

The four major gubernatorial candidates will participate in a panel discussion later this week the Public Affairs Research Council of Louisiana’s conference.