This is an old Daily Mail link, but the subject isn't topical...
// Sir Edward Heath might never have had a stint in 10 Downing Street had he not heeded advice to stop 'cottaging' for gay sex.
For he was warned in the 1950s that cruising for homosexual encounters could destroy his political career.
In an internet article for the New Stateman magazine, Mr Coleman claimed that gay men had run the Conservative Party in the capital for years, whether as officials, councillors or volunteers. //
http://www.dailymail.co.uk/news/article-450412/Ted-Heath-stopped-cottaging-gay-sex-protect-career-says-Tory-MP.html