First of all, you are doing a lot by speaking your mind here. There are folks, believe it or not, here at Catbox who aren't decided. Okay, very few. But some...
Next, write letters to your local paper. You don't have to say you are Democrat or anything. Just poke holes in Bush's policies.
Write your congresspeople on issues where Bush is weak... Lots all of them... Stick to issues. Poke more holes.
Send money to John Kerry. I haven't but will even though I may not be able to hold my nose hard enough to vote for him. At least if I vote for Nadar, I will know that I at least sent 25 bucks to the Dems...
Put bumber stickers on your car that are either anti-Bush, pro-peace 'er pro Kerry. Please don't put an "Anybody But Bush" sticker. It is insulting and counterproductive...
Lastly, get to work in the campaign. Yoy are just one phone call away from gettin' involved. Campaigns need volunteers to knock on doors and work phones and I promise that you will meeet some really cool folks workin' in a campaign.... I still have friends to this very day who I knocked on doors with for Bobby Kennedy back in '68...
So there's a few things you can do to make a difference...