The priority should be to target swing voters rather than planning alliances with other parties. (blog.politics.ox.ac.uk)
So we are resolute in wanting to explore the potential for progressive alliances with other parties that will deliver fair votes. (totalpolitics.com)
Here are some others: Labour memories of the SDP adventure that prolonged their last sojourn in the wilderness; tribal Labour allegiance that makes even the most demoralised MPs want to fight to regain control of the party they love, no matter how long it takes; that same visceral loyalty forbidding alliance with other parties; lingering hope among liberal Tories that May will not abandon them completely. (theguardian.com)