By Mikey Smith The Lib Dems are could be half a million pounds in the hole if Rishi Sunak decides to hold an autumn election. Party President Mark Pack admitted in an email to members that the party will be down £550,000 if the PM picks October or November to go to the polls, because of lost revenue from the party’s annual conference. Party conferences are crucial for party fundraising, as sponsors and exhibitors flock to get their brands and campaigns in front of MPs and Peers. Mr Sunak has repeatedly refused to say when the election will be. While many in Westminster believe he’ll go for an …