Complex sentence: One state Senator, Sheila Kiscaden of Rochester, was an Independence Party member until December 2005 when she began caucusing with the DFL, although she had been an elected Republican in the past.
Split into simpler sentences: One State Senator, Sheila Kiscaden of Rochester, was an Independence Party member until December 2005. She caucuses with the DFL today, although she had been an elected Republican in the past.