To get people to the polls you have to make them think something important is at stake. Therefore, pound on two things: The plan to impeach Pres. Trump and the border. Many Republicans seem to be running mainly the economy. That doesn’t motivate people to get out and vote.
Are the Democrat candidates saying “I don’t want a strong economy”? The question answers itself. This is why primarily focusing on the economy is so stupid. Most of the GOPe candidates will be running on it though, following the advice of their GOPe consultants not to defend the President or talk about the border. They believe that talking about the economy is “safe”, i.e. non-controversial. By following the “safe” option many of them will be goners. At least we’ll be rid of those idiots.
Why do you say the economy doesn’t motivate people to get out and vote? All you have to do is remind them that the Democrats plan to undo all this economic progress.