It's not going to help in the mid-terms though.
What would happen if the elections were held today:
Trump is unpopular among unaffiliated voters, the ones that actually decide elections. (People like Jarod would vote for Fifty First Weekends at Bernie's if the candidate were a Democrat, and people like TA Gardner will vote for the republican even if he is a YUGE spendthrift and a populist rather than a conservative and tells you that the constitution should be suspended when he loses elections. It's only the unaffiliated folks who change back and forth). Because Trump is unpopular with that group and there are enough to change the number of republicans in Congress republicans may lose both the House and the Senate.
The Democrats, who are unhappy with Democrats, are NOT unhappy with their own Congresscritter (never are) and will vote for them anyway, and the guy running against the republican who is in office in areas where republicans are in office is not one of "those" democrats that they are unhappy with.
Democrats and republicans will vote party line as they always do, it is the unaffiliated voter that matters.