Businessman Bill Binnie plugged another $1.7 million of his own money into the New Hampshire GOP Senate primary in the first quarter.

The money brings his total investment in the race to nearly $3 million and serves notice that the frontrunner Republican, former state Attorney General Kelly Ayotte, will almost surely be outspent in the primary.

Binnie's campaign also raised $400,000 for the quarter, bringing its total receipts to $2.1 million for the quarter and $3.7 million overall.

Ayotte raised about $1.2 million through the end of the year. She has not released first-quarter totals.

On the Democratic side, Rep. Paul Hodes (D-N.H.) has raised close to $3 million for the race, including $655,000 in the first quarter.