Republican congressional candidate Richard Tisei has reason to smile this week, as he outraised incumbent Congressman John Tierney in the second quarter.

Tisei raised $568,871 last quarter, compared to Tierney's haul of about $400,000.

"I'm simply amazed at the growth in support from individual donors throughout the district," Tisei said in a statement. "In my wildest dreams, I wouldn't have imagined that so many people would be supporting our message of change with their pocketbooks - particularly in these very tough economic times."

This marks the third quarter in a row Tisei has outraised Tierney -- every quarter since announcing his candidacy in November.

Tierney finished the quarter with more than $700,000 on hand, but Tisei is catching up. And Tierney has raised about $1.3 million in this election cycle going back to January 2011, but Tisei has raised almost as much going back to just last November.

The Tierney campaign isn't expressing concern, though, and recently bought $350,000 of TV airtime for the weeks leading up to the election.

“The outpouring of support from grassroots donors in Massachusetts shows that we will have the resources to win this election, and the enthusiasm from volunteers and activists to mount a massive voter contact program," Tierney campaign manager Matt Robinson said in a statement.