I don't think the electorate or any state is as uniform as you imply. There are all sorts of views on how to organize the government.
Even in states that are dominated by one party, it has different "wings."
Who said anything about uniformity?
All I am saying is that in order to win, a candidate should reflect the values of their voters. That's not to say one person could completely represent everybody. That is to say that people in a jurisdiction reach consensus on many issues.
In NY, abortion is one. NYers love having abortion available. They like having it handy. Nice to have on a rainy day. I think NY alone has over 100,000 abortions a year.
A candidate for both parties should reflect that. The issue isn't, then, 'should abortion be legal?' There is a strong consensus on the part of NYers that it should be. The issues then are peripheral: parental notification, government funding, etc.
Running a strong pro life candidate alienates most of the electorate. Why on earth would they elect him or her, given their values?