What's the difference between carpetbag and carpetbagging?

Carpetbag

Definition:

(n.) A portable bag for travelers; -- so called because originally made of carpet.

Example Sentences:

(1) Despite suffering from accusations of carpetbagging – he moved to New Hampshire in an attempt to get back to Washington two years after he lost his bid to be re-elected to his US Senate seat representing Massachusetts – Brown is polling within a percentage point of Shaheen less than 24 hours before election day, according to a RealClearPolitics average .
(2) Next May every candidate from every party will tout whatever personal connection to the constituency they can muster, and if possible denounce rivals as carpetbagging outsiders.
(3) It was a gift for his regional opponents, who call him a carpetbagging Paris opportunist with no real local ties.
(4) It has also, of course, provided a handy distraction from the carpetbagging claims.
(5) There were no tears in his post-match speech as there had been in defeat by Roger Federer in last year's final, just a genuinely affectionate moment of communion with a Centre Court augmented by an A-List roster of carpetbagging VIPs, among them David Cameron, Ed Miliband and Alex Salmond waving a comically vast – and strictly non-U in the royal box – saltire.