Rep. Charles Boustany defeated fellow Republican incumbent in the final unsettled U.S. House race of the 2012 campaign, according to unofficial results released early Sunday.

The 2010 census cost Louisiana a seat, and redistricting led to Boustany facing Rep. Jeff Landry in a head-to-head bid for re-election.

The unofficial results from the Secretary of State's office showed Boustany with 60.9% of the votes, compared with Landry's 39.1%, with all 616 precincts reporting.

Neither candidate pulled out a definitive win in the November 6 election, sending Boustany and Landry as the top two candidates into Saturday's run-off vote.

Federal Election Commission records showed Boustany spent $3.7 million and Landry spent $1.9 million on their campaigns through November 18.

The seat was a guaranteed hold for Republicans, as they were the only candidates in the runoff.

Nationwide, Democrats picked up eight House seats this year, bringing the balance of power in the new Congress to 234 Republicans and 201 Democrats. That count includes the seat of Democratic Rep. Jesse Jackson Jr., who resigned last month. A special election is expected to take place in the spring.