Complex sentence: Crausby defeated the new Conservative candidate, Rob Wilson, by 12,669, and he has remained the MP there since, though his majority fell to 8,422 in 2001 and 4,103 in 2005.
Split into simpler sentences: Crausby defeated the new Conservative candidate, Rob Wilson, by 12,669 votes. Crausby has remained the MP there since, though his majority fell to 8,422 in 2001 and 4,103 in 2005.