WI late 1920s SDP lead coalition in Wiemar republic does not fall apart

Alright so i was wondering, what if the german peoples party and the SDP in late 1929 decided to agree on budgetry issues and compromised. This would lead to the grande coalition not falling apart. ALso lets say Muller does not die in 1931 and continues to be german chancellor. so what happens now can the weimar survive or will hitler still sieze power
 
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