That is the sort of attitude that has given us the garbage dump known as the GOP Senate caucus. Any old POS will do so long as it wears the GOP uniform, right?
The GOP Caucus leans to the left because the GOP leans to the left. Republicans lean to the left. Look at how they vote. But, bad as they are, they beat having 55 Harry Reid's running the Senate.
As for Kirk: True, Blue good old fashioned Republicans are no longer electable in Illinois. So electing Kirk vs conceding the seat to the Dems seems to me to be an easy choice.
Image that we lose Kirk and and a few other GOP Senators and the Dems end up with a 51 to 49 majority in the Senate. Imagine that Trump still wins the Presidency. That loss of Kirk in Illinois means we lose the Senate. A Kirk win would give us a 50:50 split and the vote of Pence would allow Trump to have a GOP Senate.
Don't be foolish. As bad as he is, Kirk is as good as we can get and we may need him. I want him to win.