Optimists will point out that the Republicans, no less than the Democrats, tend to flirt with extremes in the primaries, thenselect an electable moderate (with Mr Romney being the likely winner this time).
Select from this list the ones you want to network with and then choose who else in your contacts you would like to invite - though bear in mind they will get an e-mail from Twitter asking them to join up, so choose carefully the people you think will not mind this.