Earlier quoted context omitted.
FWIW, Dems seem to be outsourcing their digital needs more than Republicans. Looks like Bernie Sanders is with Wide Eye Creative and Martin O'Malley is with Blue State Digital. Potentially because there are many, many more successful Dem web firms (including one I work for lol) than there are Republican counter parts... Not sure though, just an interesting data point.
Which firms are your Republican counterparts?
For example the Democratic field has some really great players in it like Bully Pulpit Interactive, Blue State Digital, NGP VAN, Wide Eye Creative, Target Smart etc... The Republican field has less but still some good ones like i360, Targeted Victory, Push Digital, NationBuilder, etc.
tl;dr - D's have more and historically better firms. R's have less total firms but this cycle we could maybe see them on an equal (possibly better? probably not, but possible) level as D's.