Theresa May said that we should judge the Tory government on their record, so here's a list of some of the things that any reasonably well informed citizen should know about the Tory record in government since 2010.
Election fraud
The Tory party committed electoral fraud in 2015. They've already paid the maximum fine the Electoral Commission could levy against them for election cheating, and 30 Tories are facing the prospect of criminal prosecution for financially doping their way to victory in a number of marginal constituencies.
A Vote for Tories is a vote to empower electoral cheats
Longest fall in value of wages since records began
Under Tory rule British workers have suffered the longest sustained decline in the real value of their wages since records began. The fall is so bad that it's the joint worst wage collapse in the developed world with Greece. The difference of course is that Greece did that to their workers because they were forced to by the Troika, the Tories did that to British workers because they wanted to.