Do you really think this celeb electioneering is sincere?

Yes, they're completely genuine and doing something worthwhile with their popularity.

Perhaps, but I question their need to be seen in one of those campaign T-shirts.

Not likely - I doubt they even know what any of the policies or agendas are.

No way - celebrities are vapid, needy exploitation junkies ready to jump any bandwagon quicker than you can say: 'Kabbalah'