英语语句结构分析Two months before Election Day,finding a pessimistic

Two months before Election Day,是时间状语,before Election Day是Two months 的定语.
主语：Finding a pessimistic Republican strategist
系动词：is
表语：about spotting a five-legged unicorn on your lacol interstate
系动词和表语共同组成谓语
Finding这里是一个动名词.相当于把整个动词词组find a pessimistic Republican strategist 名词化.当然你也可以把find a pessimistic Republican strategist 当成一个祈使句,让后把finding a pessimistic Republican strategist 当成一个名词化的句子.
表语看来似乎很复杂,但是他相当于一个介词词组：about doing sth.
as tough as 是对sport这个动词的修饰.sporting一样是动名词.
about后面的部分,你也可以,和前面一样,把他当成名词化的词组或者句子.
如果当成名词化的句子的话,那么sport a five a five-legged unicorn on your local interstate 中,on your loacal interstate是句子的状语.