Most people don't care about politics that much, they vote more or less for a continuation of what's currently going on with an occasional minor course correction one way or another.
I imagine that was the case with that lady, didn't care about politics, wanted things to be more or less the same, votes Conservative and when put on the spot doesn't really have a good explanation as to why.
The most useful thing about democracy is the ability to kick people out, not necessarily choose the best person for the job.
We could do a bunch of rounds of elections where we all vote against someone (or some party) Big spending attention whores would be eliminated in the first round.
I imagine that was the case with that lady, didn't care about politics, wanted things to be more or less the same, votes Conservative and when put on the spot doesn't really have a good explanation as to why.
The most useful thing about democracy is the ability to kick people out, not necessarily choose the best person for the job.