Republicans are worried enough about the potential for defection by one or two Republican senators that they're blatantly concern-trolling red-state Democrats up for re-election this year. None of those Democrats have weighed in yet on their position, though a few of them have set up meetings with the nominee, Brett Kavanaugh.
When when it comes to their Republican opponents, there's no subtlety in trying to force their hands. Republican Patrick Morrisey—Joe Manchin's opponent in West Virginia—says that "the longer Joe Manchin waits [to announce a position], the more it's clear he's only in this to appease his liberal donors." Yes, that huge swath of liberals that's propping up Manchin. Morrisey might want to consider instead his backing of a law suit that could end up taking away health insurance from tens of thousands of West Virginians, definitely an issue in this state—particularly with a Supreme Court nominee likely to use his vote to end protections for people with pre-existing conditions.
Heidi Heitkamp's opponent Rep. Kevin Cramer (R-ND) is full of advice for her, saying "she has no choice but to vote for Brett Kavanaugh." Which is as ridiculous as his advice for her: "The best thing she could do for herself politically would be to announce her support for him very early and not have to be viewed through the cynical lens of a last-minute trick." Heitkamp's not biting: "The only timeline I have is that I have to watch the hearings," she says. Likewise, Manchin isn't taking the challenge, either. "I think after the hearings I'm going to know," he told reporters, "because I'll have another meeting, probably, if there are any discrepancies from his first meeting and the hearings." Ditto for Claire McCaskill (D-MO): "I'm not going to speak about it until after I’ve learned more and have made up my mind."
As for potentially wavering Republicans, Alaska's Lisa Murkowski is giving leadership the most headaches. She's delayed meeting Kavanaugh, saying she wants to focus on a spending bill she's shepherding to the floor this month. She also says she wants a two-hour meeting with him and will probably ask for a second, post-hearing meeting. "I have to do my own due diligence as a senator. And if that means that I take longer than others, I'm okay with that," she said. "I don't make any apologies for being too thorough."