What many expected to happen Saturday night, did.

Leading up to the runoff election for one of Louisiana's U.S. Senate seats, every respectable poll showed not only a Bill Cassidy win over incumbent Mary Landrieu, but a win by double digits.

Once the primaries passed, the national GOP poured money and attention to this race in the effort to 'finish the job' and knock off the 3-term Democrat incumbent Landrieu. Meanwhile, money to back Landrieu was pulled as she faced an onslaught of ads against her.

Landrieu has been a U.S. Senator since 1996. Cassidy has represented Louisiana's 6th Congressional since 2009.