(D) Mark Kelly running for John McCain's old seat in AZ

[Flying Hellfish]

The GOP lost Flakes seat to the democrats (McSally lost to Sinema) then gave McCains open seat to McSally.  Mark Kelly has launched a campaign for that seat.

Who will the GOP run against Kelly (assuming he wins the primaries), McSally who just lost a senate race in AZ 2 years earlier?

The GOP has ~22 senators up for re election in 2020 compared to the democrats ~10 and races like this are going to be pretty big in terms of 2020 senate control!