This can also be applied to... all of life
I drive a holden/ford therefore it is better and all people that drive them are better etc etc. It's also not limited to men.
mum told me today that one day she was talking politics (as our family is wont to do) with her parents and she asked gran who she voted for and why. When she said 'x', because your father does, and he must be right, grandpa looked shocked as all hell and told her that wasn't a decent reason to vote for them
(albeit, he would have told her why she wrong had she said party 'y').
Personally I don't vote for either/any party. I vote for policies (or don't vote for a lack of decent ones as it may be). I don't drive a car because it's got a blue badge, I drive it because I trust it, and I've driven and owned others.
At the moment in relation to policies which are important to me it comes down to: manufacturing and jobs; urban sprawl control (and therefore reducing the amount of arable land we're selling off for development); sustainability, both environmentally and economically; education; and poverty. Will I find a party that fits my personal little state of euphoria? I doubt it, unless I run for it myself (lulz, can't be stuffed with that, but I'm tempted). So it's about working out which party will do the least amount of the opposite to what ideals I have.