Senate control to be undecided for weeks after election?

According to USA Today:

WASHINGTON — An unusual convergence this year of tight races, likely runoffs, a surging independent candidate and a potential push for party switchers suggest that the 2014 battle for U.S. Senate control may continue weeks after Election Day.

“Any one of (these variables) could delay the outcome of the Senate for days, weeks, months maybe,” said Kyle Kondik, with the University of Virginia Center for Politics.

Read more here.