The issues section details which issues are being most talked about by voters. Some issues drive sentiment towards the Republicans, while other issues drive voter sentiment to Joe Biden’s side. When the bar is blue, it means the conversation helps the Democrats. When the bar is red this means it favours Donald Trump. The size of the bar represents how much voters are influenced by the issue. The arrows indicate day to day changes; in the Electoral College it indicates losses or gains in electoral votes.
On the right-hand side, the numbers represent the popular vote — it is not a metric that can be used to calculate electoral votes but it does serve to indicate the current mood among voters towards a candidate.