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On Marco Rubio's website, there is a little more about his life than what you collected. He's worked as a lawyer and a professor. He's served on the boards of several organizations.
Again, the question is what in Dr. Escoffery's background would make him that much more effective a senator than Mr. Rubio? I don't see anything that would make me think that he would be that much more effective a senator. While I would love to see a time when we send people to the Senate or House for less than ten years, we aren't at that time yet and aren't likely to be there in the next twenty years. Dr. Escoffery is 66 years old. He's questionable for a second term, and 66 is a bit old to be a freshman senator. He seems to be a great guy, but I can't see him being more effective as a senator.
The notion that door to door campaigning has been replaced by Facebook and Twitter is fiction. Facebook and Twitter were helpful for Barak Obama mobilizing young voters and volunteers in the Democratic primary. Otherwise, the only people who say that you can win elections with Facebook and Twitter alone are the Facebook and Twitter advertising departments and people who are unwilling to do the hard work of real campaigning. Millions of voters don't use either of these online services, and an effective campaign has to have more than just people sitting around fiddling with their computers. An underdog campaign has to be effective online, but the online campaign has to work hand-in-hand with a strong traditional campaign.