Why do modern liberals want to stay within the evangelical movement?

I was one of the interviewees for a piece entitled What is the Gospel Coalition? on Christian.co.uk.  Here is the extract of what I said in response to the question “are some UK Evangelicals moving away from the gospel?”,  the whole article is worth a read:

“Definitely yes,”

“There’s always been liberalism. What’s different about it now is it seems more reluctant to use the label. When I grew up in Christianity I spoke to people who would clearly say ‘I’m a liberal’. Evangelicals were seen as a pesky minority. That’s changed and there’s a trend to a more evangelical faith. The evangelical movement is where the money is, the power is and the growth is in the UK. People who have a more liberal approach are wanting to stay within the evangelical movement rather than critique it from the outside.”

“Evangelicalism in the past was defined as whether or not you agree with John Stott and Billy Graham, but now perhaps that’s less the case and we’re a little bit more at sea as to what that definition is.”