Now first of all, I don't agree with his politics. So that's sort of the first strike against him. I didn't really have to look up his site to discover that I didn't agree with his politics (plopping a flag in someone's yard is a pretty good indicator I think) but it was nice to see what I didn't like about him specifically.
I'm pretty sure that placing political paraphenalia on private property is unlawful, but he got around that by not specifically saying "vote for me".
Blatant displays of nationalism are one of the many American traits that make us so hated around the globe. Then add in that I think it's insulting as fuck to use patriotic symbolism in the course of your own political ambitions and now this little chunk of cloth on a stick is nearly as meaningful to me as one of those "Val-u-pak" mails.
Most of our neighbors kept the flags out. Just left them there in the ground, touching the ground, overnight, in the rain. Convenient patriotism doesn't begin to cover it. One of our neighbors is active military who was recently in Iraq. Not on the ground actually fighting anyone, just in some diplomatic capacity. They have a full sized flag hung outside their home year round. Hung at the wrong angle, never lit, never cleaned, never pulled in from the rain. They stuck the new one from the politician on the front of one of their cars, right on the grill.
On the whole street, I think the only people who didn't leave the flags there were us and the British family.