Former President Donald Trump has the edge on Vice President Kamala Harris in Arizona, while Republican Kari Lake is locked in a dead heat with Rep. Ruben Gallego (D-AZ) for Sen. Kyrsten Sinema’s (I-AZ) seat, according to an internal poll for the National Republican Senatorial Committee. The poll, conducted by Peak Insights and first reported by the National Journal on Thursday, finds Trump at 44 percent in a three-way presidential race. Harris sits in second place with 42 percent of support, while Robert F. Kennedy Jr. follows with 11 percent backing. Another three percent of respondents are undecided: New ARIZONA...