It all starts with winning Fort Bend county.
With Richmond its county seat, Fort Bend last voted Democratic when Lyndon Johnson carried it
and his home state of Texas in Election 1964.
With unseated George Bush, in 1992, and losing Republican challenger Bob Dole, in 1996, winning Fort Bend by more than 10%, it was strongly (more than 15%) in George W. Bush's column, in 2000 and 2004. So, the shift was remarkable in 2008: John McCain held it in the Republican column by just 2.39%.
One neighbor southwest of Harris County (Houston), which gave Barack Obama's Democratic Party its first victory since 1964 LBJ, Fort Bend County could bode well for the 44th president if he wins re-election in 2012 and shifts the State of Texas in his direction (both of which I believe will happen).