If taxes are increased disposable income?

No, in fact if the government takes less of your taxes it allows you to spend more of the money you earn. When you spend more, you help more businesses and with everyone doing that, the general economy inproves. But some politicians want to increase taxes, leaving you with less money and hopefully leaving you more dependant on the government so that you'll start to believe that the only way to survive is to depend on the government... thereby supporting a "tax and spend" policy. Personally, I'd rather be in charge of supporting myself.

Wow, all that Republican dribble at the end would be considered an opinion and it contradicts what others who have graduated from Econ 101 would consider fact.

The answer to your question is:

No, tax deductions and disposable income have an inverse relationship. As one increases, the other decreases.