Who's in charge: The muddy history of the 50-50 Senate

There's a very real chance we could again see a 50-50 Senate in the next Congress – however, the divvying-up of power in such a scenario is rarely as cut-and-dry as it appears on paper.

There is a very real chance that the Senate could be tied at 50-50 in the 119th Congress which begins in January. Chad Pergram currently serves as a senior congressional correspondent for FOX News Channel (FNC). He joined the network in September 2007 and is based out of Washington, D.C.

The Senate map in play next week definitely favors Republicans. Democrats currently hold a 51-49 edge. There are four independent senators who "caucus" with the Democrats, giving them operational control.