Supporters of al-Qaeda
This is the key phrase here. Just because you support an organization doesn't mean said organization endorses anything you say or is even aware of your existance.
This is bullshit, sensationalist journalism. I could stand outside of my cube here at work (in Dallas) and easily find a dozen people who voraciously support the Dallas Cowboys and are convinced that the Dallas Cowboys, along with the entire NFL, support John McCain. That has no bearing on anything at all.
The fact is that terrorists and their supporters do not have the power to make real change in the US and they know this. Look at the result of the biggest victory they'll ever have: 9/11. That was their opus, they'll never hit us like that again. What changed because of it? In my day-to-day life, the only thing that changed is I have to take off my shoes briefly before getting on an airplane. Sure, Republicans and religion got a brief boost in their followers, but the pendulum always swings back.