Republicans fighting to hang onto Senate — in 2016

FILE - In this Jan. 6, 2014 file photo, Sen. Ron Johnson, R-Wis. speaks on Capitol Hill in Washington. Even as Republicans celebrate their Senate takeover, they are making plans to defend it. In the 2016 Senate elections, GOP candidates will be defending incumbents in states President Barack Obama won _ a stark turnaround from this past November when Democrats were on the defense. (AP Photo/J. Scott Applewhite, File)WASHINGTON (AP) — Senate majority in hand, ascendant Republicans are set to challenge President Barack Obama and the Democrats on Capitol Hill come January. But a much tougher election map two years from now could force the GOP right back into the minority.

Share this article