Electoral reform was also an advertised manifesto pledge. A pretty huge one actually: "a fair deal by cleaning up politics".
My key point here is that, while I understand you feel betrayed, the other parties are quite literally breaking their pledges left and right.
The main difference is that it seems to get not that much media attention.
That you wouldn't vote for someone who made a compromise against their values: but might vote for a purported anti-semite[0] or an actual racist homophobe[1] is disquieting.
[0]: Corbyn being accused of being an anti-semite is of course a load of tosh spun by the right wing media machine
My key point here is that, while I understand you feel betrayed, the other parties are quite literally breaking their pledges left and right.
The main difference is that it seems to get not that much media attention.
That you wouldn't vote for someone who made a compromise against their values: but might vote for a purported anti-semite[0] or an actual racist homophobe[1] is disquieting.
[0]: Corbyn being accused of being an anti-semite is of course a load of tosh spun by the right wing media machine
[1]: https://www.theguardian.com/politics/2017/sep/30/boris-johns... & https://www.independent.co.uk/news/uk/politics/boris-johnson... & the numerous comments regarding "letter boxes"