Former President Trump’s campaign finances are shaping up as a dominant force in this week’s GOP midterm convention in Dallas, as party members express growing unease over how his political operation has allocated funds in key races. His affiliated super PAC recently made its largest spending move of the cycle with a $10 million ad campaign backing a Republican Senate candidate. The financial influence of Trump’s network continues to reshape the party’s strategy ahead of critical elections. Critics within the GOP are questioning whether the resources are being deployed effectively to secure victories.


President Trump’s massive campaign war chest is looming over the GOP’s midterm convention in Dallas this week as Republicans grow frustrated with how his political operation has spent in races this cycle. Trump’s super PAC made its first major investment of the cycle last week, dropping a $10 million ad buy supporting the GOP Senate...