Trump using extremists positions by Democrat candidates for President to grow his base

Politico:

When the Democrats running for president all agreed at their first debate — via a raised hand — that public health insurance should cover undocumented immigrants, the Trump campaign saw an opening.

The campaign war room immediately clipped the video and shared it on social media. President Donald Trump tweeted about it. It was a tactic, people assumed, to rile up Trump’s steadfast but limited base ahead of 2020.

Inside the Trump campaign, though, officials thought they were actually growing that base.

According to four people involved with or close to the Trump campaign, the president’s reelection team believes trumpeting these moments will help win over a certain type of voter that could help carry him to a second term. It’s the voter who might be wary of Trump, but is more alarmed by a Democratic Party they feel is drifting dangerously to the left.

The campaign thinks blasting out these buzzy responses — one outside adviser specifically pointed to Julián Castro’s endorsement of abortion rights for the transgender community — will actually help Trump add key demographics to his die-hard supporters. In particular, they’re targeting working-class voters and union members who declined to support Trump in the Rust Belt states he won in 2016 — Pennsylvania, Michigan, Ohio and Wisconsin.

If the theory is right, the adviser said, Trump can “sit back, relax and watch his base grow.”
...

By pandering to their own wacko base the Democrats are actually seen to be helping Trump.  That has always been one of his strengths, i.e. pointing out what others see as crazy policies of Democrats.