McCaskill won’t be the only convention no-show, just one of the more conspicuous
"McCaskill’s campaign says she’s staying away this year because her time could be better spent back home campaigning. That might be true enough. McCaskill is unlikely to find any Missouri voters in Charlotte who aren’t already on her side. Among Democratic Senate incumbents facing re-election, she might very well have the steepest hill to climb.
Her campaign also points out that she has only attended Democratic Party conventions in recent years when she has either not been on the ballot or was, but had no opposition.
Republicans crow that McCaskill is staying away in an effort to lessen her link with the president.
“Skipping a few cocktail parties and rallies in Charlotte doesn't distance her from the president,” Sarah Steelman, one of three Missouri Republicans hoping to face her in the fall, said in a statement."