A Massachusetts poll making the rounds this week implied that Democratic Sen. Elizabeth Warren may be in trouble in 2018. But without a declared challenger, it’s hard to see much danger on the horizon for Warren in a blue state.

The bigger question is not whether Warren is well-liked in her own state, but whether she’s disliked enough in other states to be a liability for Democrats facing re-election in places President Donald Trump won last year.

It’s still early in what’s likely to be an unpredictable cycle. But so far, Republicans are trying hard to tie vulnerable Senate Democrats to Warren (and Vermont independent Sen. Bernie Sanders), with the National Republican Senatorial Committee calling them “two of the most fringe members of the Democratic Party.”

A lot could change by the time TV ads are cut. But if NRSC press releases are a preview of paid communications to come, Warren could assume the boogeyman role similar to the one House Minority Leader Nancy Pelosi has long held for Republicans trying to attack House Democrats as too liberal and out of touch with their districts.

Those ads are usually intended to mobilize the GOP base, said Republican ad-maker Bob Kish. “I cannot imagine that the average/independent voter has a hard opinion on Elizabeth Warren and may not even know who she is,” he said in an email.